arm64: dts: r8a7795: salvator-x: Enable I2C for DVFS device

This patch enables I2C for DVFS device for for Salvator-X board on
R8A7795 SoC.
Signed-off-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts

@@ -485,6 +485,10 @@ &audio_clk_a {
 	clock-frequency = <22579200>;
 };
 
+&i2c_dvfs {
+	status = "okay";
+};
+
 &avb {
 	pinctrl-0 = <&avb_pins>;
 	pinctrl-names = "default";