arm64: dts: r8a7795: Use R-Car SATA Gen3 fallback compat string

Use newly added R-Car SATA Gen3 fallback compat string
in the DT of the r8a7795 SoC.

This should have no run-time effect as the driver matches against
the per-SoC compat string before the fallback compat string is considered.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a7795.dtsi

@@ -1451,7 +1451,8 @@ ssi9: ssi-9 {
 		};
 
 		sata: sata@ee300000 {
-			compatible = "renesas,sata-r8a7795";
+			compatible = "renesas,sata-r8a7795",
+				     "renesas,rcar-gen3-sata";
 			reg = <0 0xee300000 0 0x200000>;
 			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 815>;