ARM: atmel: sama5d4 boards: fix spl lds location

As the u-boot-spl.lds is moved to <arch/arm/mach-at91> directory.
So, correct the path for sama5d4 related boards.

Signed-off-by: Bo Shen <voice.shen@atmel.com>

include/configs/sama5d4_xplained.h

@@ -246,7 +246,7 @@
 #define CONFIG_SYS_MONITOR_LEN		(512 << 10)
 
 #ifdef CONFIG_SYS_USE_MMC
-#define CONFIG_SPL_LDSCRIPT		arch/arm/cpu/at91-common/u-boot-spl.lds
+#define CONFIG_SPL_LDSCRIPT		arch/arm/mach-at91/u-boot-spl.lds
 #define CONFIG_SPL_MMC_SUPPORT
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x400
 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200

include/configs/sama5d4ek.h

@@ -244,7 +244,7 @@
 #define CONFIG_SYS_MONITOR_LEN		(512 << 10)
 
 #ifdef CONFIG_SYS_USE_MMC
-#define CONFIG_SPL_LDSCRIPT		arch/arm/cpu/at91-common/u-boot-spl.lds
+#define CONFIG_SPL_LDSCRIPT		arch/arm/mach-at91/u-boot-spl.lds
 #define CONFIG_SPL_MMC_SUPPORT
 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x400
 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200