arm64: defconfig: Add Renesas R-Car SATA driver for R-Car Gen3 SoCs

This adds Renesas sata_rcar driver to defconfig.
Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/configs/defconfig

@@ -93,6 +93,7 @@ CONFIG_SATA_AHCI=y
 CONFIG_SATA_AHCI_PLATFORM=y
 CONFIG_AHCI_CEVA=y
 CONFIG_AHCI_XGENE=y
+CONFIG_SATA_RCAR=y
 CONFIG_PATA_PLATFORM=y
 CONFIG_PATA_OF_PLATFORM=y
 CONFIG_NETDEVICES=y