ARM: renesas: Deduplicate common Renesas defconfig

Deduplicate common Renesas defconfig by factoring out the common
parts into generic renesas_rcar_defconfig and including those using
the #include <configs/...> preprocessor macro in the current set of
board specific defconfigs. The preprocessor macro is applicable
to defconfigs as well.

This introduces no functional change, the resulting .config are
identical for all Renesas systems.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/configs/renesas_rcar2.config b/configs/renesas_rcar2.config
index 77606a4..74dfd41 100644
--- a/configs/renesas_rcar2.config
+++ b/configs/renesas_rcar2.config
@@ -1,56 +1,32 @@
+#include <configs/renesas_rcar.config>
+
 # CONFIG_CMD_IMI is not set
 # CONFIG_CMD_XIMG is not set
 # CONFIG_EFI_LOADER is not set
 CONFIG_ARCH_CPU_INIT=y
 CONFIG_BOOTDELAY=3
-CONFIG_CLK=y
-CONFIG_CLK_RENESAS=y
-CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_CACHE=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_EXT2=y
-CONFIG_CMD_EXT4=y
-CONFIG_CMD_EXT4_WRITE=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_GPIO=y
-CONFIG_CMD_I2C=y
-CONFIG_CMD_MII=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PCI=y
-CONFIG_CMD_PING=y
 CONFIG_CMD_SDRAM=y
 CONFIG_CMD_TIME=y
 CONFIG_CMD_USB=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x4f000000
-CONFIG_DM_GPIO=y
-CONFIG_DM_I2C=y
-CONFIG_DM_REGULATOR=y
-CONFIG_DM_REGULATOR_FIXED=y
-CONFIG_DM_REGULATOR_GPIO=y
-CONFIG_DM_SPI=y
-CONFIG_DM_SPI_FLASH=y
 CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_ENV_SIZE=0x40000
-CONFIG_FIT=y
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
-CONFIG_HUSH_PARSER=y
-CONFIG_MTD=y
 CONFIG_NR_DRAM_BANKS=1
-CONFIG_OF_CONTROL=y
 CONFIG_PARTITION_UUIDS=y
 CONFIG_PCI=y
 CONFIG_PCI_RCAR_GEN2=y
 CONFIG_PINCONF=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_PFC=y
-CONFIG_RCAR_GPIO=y
 CONFIG_RENESAS_SDHI=y
-CONFIG_SCIF_CONSOLE=y
 CONFIG_SH_QSPI=y
-CONFIG_SPI=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SYS_CBSIZE=256
 CONFIG_SYS_I2C_RCAR_IIC=y
@@ -64,4 +40,3 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_PCI=y
 CONFIG_USB_STORAGE=y
-CONFIG_VERSION_VARIABLE=y