arm64: dts: renesas: aistarvision-mipi-adapter-2.1: Add parent macro for each sensor

For HiHope RZ/G2H the OV5645 sensor is populated on i2c2 whereas the imx219
sensor is populated on i2c3 so add support for handling such cases by
adding a parent macro for each sensor.

Also update r8a774c0-ek874-mipi-2.1.dts to incorporate the changes.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20201020125134.22625-2-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/aistarvision-mipi-adapter-2.1.dtsi

@@ -61,7 +61,7 @@ osc25250_clk: osc25250_clk {
 	};
 };
 
-&MIPI_PARENT_I2C {
+&MIPI_OV5645_PARENT_I2C {
 	ov5645: ov5645@3c {
 		compatible = "ovti,ov5645";
 		reg = <0x3c>;
@@ -77,7 +77,9 @@ ov5645_ep: endpoint {
 			};
 		};
 	};
+};
 
+&MIPI_IMX219_PARENT_I2C {
 	imx219: imx219@10 {
 		compatible = "sony,imx219";
 		reg = <0x10>;

arch/arm64/boot/dts/renesas/r8a774c0-ek874-mipi-2.1.dts

@@ -8,7 +8,8 @@
 
 /dts-v1/;
 #include "r8a774c0-ek874.dts"
-#define MIPI_PARENT_I2C i2c3
+#define MIPI_OV5645_PARENT_I2C i2c3
+#define MIPI_IMX219_PARENT_I2C i2c3
 #include "aistarvision-mipi-adapter-2.1.dtsi"
 
 / {