ARM: shmobile: defconfig: Enable support for RZ/A2

Enable support for the RZ/A2 SoC, including pin control, now the DTS for
the Renesas RZ/A2M evaluation board is included.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/configs/shmobile_defconfig

@@ -86,6 +86,7 @@ CONFIG_SPI_RSPI=y
 CONFIG_SPI_SH_MSIOF=y
 CONFIG_SPI_SH_HSPI=y
 CONFIG_PINCTRL_RZA1=y
+CONFIG_PINCTRL_RZA2=y
 CONFIG_GPIO_EM=y
 CONFIG_GPIO_RCAR=y
 CONFIG_GPIO_PCF857X=y
@@ -172,6 +173,7 @@ CONFIG_STAGING_BOARD=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_ARCH_EMEV2=y
 CONFIG_ARCH_R7S72100=y
+CONFIG_ARCH_R7S9210=y
 CONFIG_ARCH_R8A73A4=y
 CONFIG_ARCH_R8A7740=y
 CONFIG_ARCH_R8A7743=y