ARM: uniphier: enable PSCI sysreset for uniphier_v8_defconfig

This configuration is supposed to be used with ARM Trusted Firmware,
so the SYSTEM_RESET is implemented in BL31.  Invoke PSCI instead of
U-Boot's own reset code because we need to coordinate with SCP
(System Control Processor) for the system-level power management.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/mach-uniphier/Makefile

@@ -16,7 +16,9 @@ obj-$(CONFIG_DISPLAY_CPUINFO) += cpu-info.o
 obj-y += dram_init.o
 obj-y += board_init.o
 obj-$(CONFIG_BOARD_LATE_INIT) += board_late_init.o
+ifndef CONFIG_SYSRESET
 obj-y += reset.o
+endif
 
 obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc/ micro-support-card.o
 obj-y += pinctrl-glue.o

configs/uniphier_v8_defconfig

 CONFIG_ARM=y
+CONFIG_ARM_SMCCC=y
 CONFIG_ARCH_UNIPHIER=y
 CONFIG_SYS_TEXT_BASE=0x84000000
 CONFIG_SYS_MALLOC_F_LEN=0x2000
@@ -29,6 +30,8 @@ CONFIG_I2C_EEPROM=y
 CONFIG_MMC_UNIPHIER=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_CADENCE=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
 CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y