configs: am64x_evm_r5: Add Initial support

Add initial R5 defconfig support for AM64x SoCs.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>

board/ti/am64x/MAINTAINERS

+AM64x BOARD
+M:	Dave Gerlach <d-gerlach@ti.com>
+M:	Lokesh Vutla <lokeshvutla@ti.com>
+S:	Maintained
+F:	board/ti/am64x/
+F:	include/configs/am64x_evm.h
+F:	configs/am64x_evm_r5_defconfig

configs/am64x_evm_r5_defconfig

+CONFIG_ARM=y
+CONFIG_ARCH_K3=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x80000
+CONFIG_SOC_K3_AM642=y
+CONFIG_TARGET_AM642_R5_EVM=y
+CONFIG_ENV_SIZE=0x20000
+CONFIG_SYS_SPI_U_BOOT_OFFS=0x80000
+CONFIG_SPL_DM_SPI=y
+CONFIG_SPL_TEXT_BASE=0x70020000
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
+CONFIG_SPL_STACK_R_ADDR=0x82000000
+CONFIG_SPL_FS_FAT=y
+CONFIG_SPL_LIBDISK_SUPPORT=y
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
+CONFIG_SPL_SPI_SUPPORT=y
+CONFIG_DEFAULT_DEVICE_TREE="k3-am642-r5-evm"
+CONFIG_SPL_LOAD_FIT=y
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_SPL_SYS_MALLOC_SIMPLE=y
+CONFIG_SPL_STACK_R=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_EARLY_BSS=y
+CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_DM_MAILBOX=y
+CONFIG_SPL_DM_SPI_FLASH=y
+CONFIG_SPL_DM_RESET=y
+CONFIG_SPL_POWER_DOMAIN=y
+CONFIG_SPL_REMOTEPROC=y
+CONFIG_SPL_SPI_LOAD=y
+CONFIG_SPL_YMODEM_SUPPORT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_REMOTEPROC=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_TIME=y
+CONFIG_CMD_FAT=y
+CONFIG_OF_CONTROL=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_SPL_MULTI_DTB_FIT=y
+CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_ENV_FAT_DEVICE_AND_PART="1:1"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_DM=y
+CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_REGMAP=y
+CONFIG_SPL_REGMAP=y
+CONFIG_SPL_OF_TRANSLATE=y
+CONFIG_CLK=y
+CONFIG_SPL_CLK=y
+CONFIG_CLK_TI_SCI=y
+CONFIG_TI_SCI_PROTOCOL=y
+CONFIG_DM_MAILBOX=y
+CONFIG_K3_SEC_PROXY=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_ADMA=y
+CONFIG_SPL_MMC_SDHCI_ADMA=y
+CONFIG_MMC_SDHCI_AM654=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_PINCTRL=y
+# CONFIG_PINCTRL_GENERIC is not set
+CONFIG_SPL_PINCTRL=y
+# CONFIG_SPL_PINCTRL_GENERIC is not set
+CONFIG_PINCTRL_SINGLE=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_TI_SCI_POWER_DOMAIN=y
+CONFIG_RAM=y
+CONFIG_SPL_RAM=y
+CONFIG_K3_SYSTEM_CONTROLLER=y
+CONFIG_REMOTEPROC_TI_K3_ARM64=y
+CONFIG_DM_RESET=y
+CONFIG_RESET_TI_SCI=y
+CONFIG_SPECIFY_CONSOLE_INDEX=y
+CONFIG_DM_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_CADENCE_QSPI=y
+CONFIG_TIMER=y
+CONFIG_SPL_TIMER=y
+CONFIG_OMAP_TIMER=y
+CONFIG_FS_FAT_MAX_CLUSTSIZE=16384