arm64: dts: k3-j721e-common-proc-board: Fully enable wkup_i2c0 use

Make the wkup_i2c0 module usable across all stages of U-Boot by adding
the needed definitions including the associated pinmux definitions.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi
index aff0efa..7ea4d8d 100644
--- a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi
@@ -329,3 +329,11 @@
 &main_mmc1_pins_default {
 	u-boot,dm-spl;
 };
+
+&wkup_i2c0_pins_default {
+	u-boot,dm-spl;
+};
+
+&wkup_i2c0 {
+	u-boot,dm-spl;
+};