arm64: dts: r8a7795: Add I2C for DVFS core to dtsi

This patch adds I2C for DVFS device support for R8A7795 SoC.
Signed-off-by: NKeita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: NGaku Inami <gaku.inami.xw@bp.renesas.com>
Signed-off-by: NDien Pham <dien.pham.ry@rvc.renesas.com>
Signed-off-by: NTakeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>

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

@@ -25,6 +25,7 @@
 		i2c4 = &i2c4;
 		i2c5 = &i2c5;
 		i2c6 = &i2c6;
+		i2c7 = &i2c_dvfs;
 	};
 
 	psci {
@@ -793,6 +794,19 @@
 			status = "disabled";
 		};
 
+		i2c_dvfs: i2c@e60b0000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "renesas,iic-r8a7795",
+				     "renesas,rcar-gen3-iic",
+				     "renesas,rmobile-iic";
+			reg = <0 0xe60b0000 0 0x425>;
+			interrupts = <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 926>;
+			power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
+			status = "disabled";
+		};
+
 		i2c0: i2c@e6500000 {
 			#address-cells = <1>;
 			#size-cells = <0>;