ARM: dts: stm32: DT alignment with kernel v5.4-rc4

Device tree and binding alignment with kernel v5.4-rc4

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/dts/stm32mp157c-ev1.dts b/arch/arm/dts/stm32mp157c-ev1.dts
index 23de232..89d29b5 100644
--- a/arch/arm/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/dts/stm32mp157c-ev1.dts
@@ -101,6 +101,7 @@
 &dsi {
 	#address-cells = <1>;
 	#size-cells = <0>;
+	phy-dsi-supply = <&reg18>;
 	status = "okay";
 
 	ports {
@@ -165,7 +166,7 @@
 	#address-cells = <1>;
 	#size-cells = <0>;
 
-	nand: nand@0 {
+	nand@0 {
 		reg = <0>;
 		nand-on-flash-bbt;
 		#address-cells = <1>;