dm: powerpc: P1020: add i2c DM support

This supports i2c DM for SoC P1020

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/p1020-post.dtsi b/arch/powerpc/dts/p1020-post.dtsi
index 1c77702..1dce8e8 100644
--- a/arch/powerpc/dts/p1020-post.dtsi
+++ b/arch/powerpc/dts/p1020-post.dtsi
@@ -44,6 +44,8 @@
 		clock-frequency = <0>;
 	};
 
+	/include/ "pq3-i2c-0.dtsi"
+	/include/ "pq3-i2c-1.dtsi"
 };
 
 /* PCIe controller base address 0x9000 */