Convert CONFIG_SPL_GPIO_SUPPORT to Kconfig

Move this option to Kconfig and tidy up existing uses.

Signed-off-by: Simon Glass <sjg@chromium.org>

configs/at91sam9m10g45ek_mmc_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9M10G45EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9M10G45,SYS_USE_MMC"
 CONFIG_BOOTDELAY=3

configs/at91sam9m10g45ek_nandflash_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9M10G45EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9M10G45,SYS_USE_NANDFLASH"
 CONFIG_BOOTDELAY=3
 CONFIG_SPL=y

configs/at91sam9n12ek_nandflash_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9N12EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9N12,SYS_USE_NANDFLASH"
 CONFIG_BOOTDELAY=3
 CONFIG_SPL=y

configs/at91sam9n12ek_spiflash_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9N12EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9N12,SYS_USE_SPIFLASH"
 CONFIG_BOOTDELAY=3
 CONFIG_SPL=y

configs/at91sam9x5ek_nandflash_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9X5EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9X5,SYS_USE_NANDFLASH"
 CONFIG_BOOTDELAY=3
 CONFIG_SPL=y

configs/at91sam9x5ek_spiflash_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9X5EK=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9X5,SYS_USE_SPIFLASH"
 CONFIG_BOOTDELAY=3
 CONFIG_SPL=y

configs/axm_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_TAURUS=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="at91sam9g20-taurus"
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9G20,MACH_TYPE=2068,BOARD_AXM"
 CONFIG_BOOTDELAY=3

configs/bg0900_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BG0900=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_BOOTDELAY=3
 CONFIG_VERSION_VARIABLE=y
 CONFIG_SPL=y

configs/birdland_bav335a_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BAV335X=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_EXT_SUPPORT=y
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_BAV_VERSION=1

configs/birdland_bav335b_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BAV335X=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_EXT_SUPPORT=y
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_BAV_VERSION=2

configs/brppt1_mmc_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BRPPT1=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,EMMC_BOOT"
 CONFIG_BOOTDELAY=-2

configs/brppt1_nand_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BRPPT1=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND"
 CONFIG_BOOTDELAY=-2

configs/brppt1_spi_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BRPPT1=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,SPI_BOOT,EMMC_BOOT"
 CONFIG_SPI_BOOT=y

configs/brxre1_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_BRXRE1=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1"
 CONFIG_BOOTDELAY=-2
 CONFIG_VERSION_VARIABLE=y

configs/cgtqmx6eval_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_TARGET_CGTQMX6EVAL=y
 CONFIG_SPL_EXT_SUPPORT=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,SPL,MX6QDL"

configs/cm_fx6_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_TARGET_CM_FX6=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6QDL,SPL"

configs/cm_t335_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_CM_T335=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_EXT_SUPPORT=y
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_SPL=y

configs/corvus_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_CORVUS=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="at91sam9g45-corvus"
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9M10G45,MACH_TYPE=2066,SYS_USE_NANDFLASH"
 CONFIG_BOOTDELAY=3

configs/draco_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_DRACO=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="am335x-draco"

configs/etamin_defconfig

 CONFIG_ARM=y
 CONFIG_TARGET_ETAMIN=y
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_SPL_FAT_SUPPORT=y
 CONFIG_DEFAULT_DEVICE_TREE="am335x-draco"