ARM: omap2+: rename config to ARCH_OMAP2PLUS and consolidate Kconfig

In Linux, CONFIG_ARCH_OMAP2PLUS is used for OMAP2 or later SoCs.
Rename CONFIG_ARCH_OMAP2 to CONFIG_ARCH_OMAP2PLUS to follow this
naming.

Move the OMAP2+ board/SoC choice down to mach-omap2/Kconfig to slim
down the arch/arm/Kconfig level.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/am43xx_hs_evm_defconfig b/configs/am43xx_hs_evm_defconfig
index 36b76b2..886d54c 100644
--- a/configs/am43xx_hs_evm_defconfig
+++ b/configs/am43xx_hs_evm_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
-CONFIG_AM43XX=y
+CONFIG_ARCH_OMAP2PLUS=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_AM43XX=y
 CONFIG_TI_SECURE_DEVICE=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_ISW_ENTRY_ADDR=0x403018e0
@@ -54,17 +55,13 @@
 CONFIG_DFU_RAM=y
 CONFIG_DFU_SF=y
 CONFIG_DM_GPIO=y
-CONFIG_DM_I2C=y
 CONFIG_DM_MMC=y
 # CONFIG_DM_MMC_OPS is not set
 CONFIG_MMC_OMAP_HS=y
-CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
-CONFIG_SPI_FLASH_BAR=y
 CONFIG_SPI_FLASH_MACRONIX=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
-CONFIG_DM_SPI=y
 CONFIG_TI_QSPI=y
 CONFIG_TIMER=y
 CONFIG_OMAP_TIMER=y