arm64: renesas: r8a7795: fix SATA clock assignment

SATA clock is 815, not 915.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

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

@@ -772,7 +772,7 @@ sata: sata@ee300000 {
 			compatible = "renesas,sata-r8a7795";
 			reg = <0 0xee300000 0 0x1fff>;
 			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&cpg CPG_MOD 915>;
+			clocks = <&cpg CPG_MOD 815>;
 			status = "disabled";
 		};
 	};