ARM: dts: r8a7743: Remove generic compatible string from iic3

The iic3 block on RZ/G1M does not support automatic transmission, unlike
other R-Car SoC's. So dropping the compatibility with the generic version.

Fixes: f523405f ("ARM: dts: r8a7743: Add IIC cores to dtsi")
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7743.dtsi

@@ -564,9 +564,7 @@ iic3: i2c@e60b0000 {
 			/* doesn't need pinmux */
 			#address-cells = <1>;
 			#size-cells = <0>;
-			compatible = "renesas,iic-r8a7743",
-				     "renesas,rcar-gen2-iic",
-				     "renesas,rmobile-iic";
+			compatible = "renesas,iic-r8a7743";
 			reg = <0 0xe60b0000 0 0x425>;
 			interrupts = <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&cpg CPG_MOD 926>;