configs: sam9x75_curiosity: Add initial mmc default config

Add default configuration for sd-card to boot the linux kernel.

Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Reviewed-by: Eugen Hristev <eugen.hristev@linaro.org>

board/atmel/sam9x75_curiosity/MAINTAINERS

@@ -4,3 +4,4 @@ S:	Maintained
 F:	board/atmel/sam9x75_curiosity/
 F:	include/configs/sam9x75_curiosity.h
 F:	arch/arm/dts/at91-sam9x75_curiosity-u-boot.dtsi
+F:	configs/sam9x75_curiosity_mmc_defconfig

configs/sam9x75_curiosity_mmc_defconfig

@@ -0,0 +1,73 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_ARCH_AT91=y
+CONFIG_TEXT_BASE=0x23f00000
+CONFIG_SYS_MALLOC_LEN=0x81000
+CONFIG_SYS_MALLOC_F_LEN=0x12000
+CONFIG_TARGET_SAM9X75_CURIOSITY=y
+CONFIG_ATMEL_LEGACY=y
+CONFIG_NR_DRAM_BANKS=8
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20015f00
+CONFIG_ENV_SIZE=0x4000
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="microchip/at91-sam9x75_curiosity"
+CONFIG_OF_LIBFDT_OVERLAY=y
+CONFIG_SYS_LOAD_ADDR=0x22000000
+CONFIG_DEBUG_UART_BASE=0xfffff200
+CONFIG_DEBUG_UART_CLOCK=266666666
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_SD_BOOT=y
+CONFIG_BOOTDELAY=3
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="mem=256M console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait"
+CONFIG_USE_BOOTCOMMAND=y
+CONFIG_BOOTCOMMAND="fatload mmc 0:1 0x21000000 at91-sam9x75_curiosity.dtb; fatload mmc 0:1 0x22000000 zImage; bootz 0x22000000 - 0x21000000"
+CONFIG_SYS_CBSIZE=256
+CONFIG_SYS_PBSIZE=281
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="U-Boot> "
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_CLK=y
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_BOOTP_BOOTFILESIZE=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_HASH=y
+CONFIG_HASH_VERIFY=y
+CONFIG_CMD_FAT=y
+CONFIG_OF_CONTROL=y
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_CLK=y
+CONFIG_CLK_CCF=y
+CONFIG_CLK_AT91=y
+CONFIG_AT91_GENERIC_CLK=y
+CONFIG_AT91_SAM9X60_PLL=y
+CONFIG_CPU=y
+CONFIG_AT91_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_AT91=y
+CONFIG_I2C_EEPROM=y
+CONFIG_MICROCHIP_FLEXCOM=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_ATMEL=y
+CONFIG_MTD=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_AT91=y
+CONFIG_DM_SERIAL=y
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_ATMEL_USART=y
+CONFIG_TIMER=y
+CONFIG_MCHP_PIT64B_TIMER=y
+CONFIG_PHANDLE_CHECK_SEQ=y