arm64: defconfig: Enable GPIO of Renesas R-Car Gen3 SoC

Enable GPIO for  Renesas R-Car Gen3 SoC.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/configs/defconfig

@@ -135,6 +135,7 @@ CONFIG_SPI_PL022=y
 CONFIG_SPI_QUP=y
 CONFIG_PINCTRL_MSM8916=y
 CONFIG_GPIO_PL061=y
+CONFIG_GPIO_RCAR=y
 CONFIG_GPIO_XGENE=y
 CONFIG_POWER_RESET_XGENE=y
 CONFIG_POWER_RESET_SYSCON=y