ARM: dts: stm32: Repair ethernet operation on AV96

The AV96 RGMII uses different pinmux for ETH_RGMII_TXD0, ETH_RGMII_RXD2
and ETH_RGMII_TX_CTL. Use the correct pinmux to make ethernet operational.

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/dts/stm32mp157a-avenger96.dts b/arch/arm/dts/stm32mp157a-avenger96.dts
index 4dbabb3..e3f2952 100644
--- a/arch/arm/dts/stm32mp157a-avenger96.dts
+++ b/arch/arm/dts/stm32mp157a-avenger96.dts
@@ -96,8 +96,8 @@
 
 &ethernet0 {
 	status = "okay";
-	pinctrl-0 = <&ethernet0_rgmii_pins_a>;
-	pinctrl-1 = <&ethernet0_rgmii_pins_sleep_a>;
+	pinctrl-0 = <&ethernet0_rgmii_pins_b>;
+	pinctrl-1 = <&ethernet0_rgmii_pins_sleep_b>;
 	pinctrl-names = "default", "sleep";
 	phy-mode = "rgmii";
 	max-speed = <1000>;