board: armltd: Add support for Total Compute platform

Total Compute is based on ARM architecture and has
the following features enabled in u-boot:
- PL011 UART
- PL180 MMC
- NOR Flash
- FIT image with Signature
- AVB

Signed-off-by: Usama Arif <usama.arif@arm.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

configs/total_compute_defconfig

@@ -0,0 +1,53 @@
+CONFIG_ARM=y
+CONFIG_TARGET_TOTAL_COMPUTE=y
+CONFIG_SYS_TEXT_BASE=0xe0000000
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_ENV_SIZE=0x2a00000
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_DEFAULT_DEVICE_TREE="total_compute"
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_ANDROID_BOOT_IMAGE=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_BOOTDELAY=5
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyAMA0 debug user_debug=31 earlycon=pl011,0x7ff80000 loglevel=9 androidboot.hardware=total_compute video=640x480-32@60 androidboot.boot_devices=1c050000.mmci ip=dhcp androidboot.selinux=permissive"
+# CONFIG_USE_BOOTCOMMAND is not set
+# CONFIG_DISPLAY_CPUINFO is not set
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_AVB_VERIFY=y
+CONFIG_AVB_BUF_ADDR=0x90000000
+CONFIG_AVB_BUF_SIZE=0x10000000
+CONFIG_SYS_PROMPT="TOTAL_COMPUTE# "
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EDITENV is not set
+CONFIG_CMD_MEMTEST=y
+CONFIG_SYS_MEMTEST_START=0x80000000
+CONFIG_SYS_MEMTEST_END=0xff000000
+CONFIG_CMD_ARMFLASH=y
+CONFIG_CMD_GPT=y
+# CONFIG_RANDOM_UUID is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_CACHE=y
+# CONFIG_CMD_MISC is not set
+CONFIG_CMD_AVB=y
+CONFIG_CMD_UBI=y
+# CONFIG_ISO_PARTITION is not set
+CONFIG_OF_CONTROL=y
+# CONFIG_NET is not set
+CONFIG_CLK=y
+# CONFIG_MMC_WRITE is not set
+CONFIG_ARM_PL180_MMCI=y
+CONFIG_MTD=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_SYS_FLASH_PROTECTION=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_LIBAVB=y
+CONFIG_OF_LIBFDT_OVERLAY=y