ARM: shmobile: ape6evm dts: Use generic names for device nodes

max8973 -> regulator
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a73a4-ape6evm.dts

@@ -147,7 +147,7 @@ voldown-key {
 
 &i2c5 {
 	status = "okay";
-	vdd_dvfs: max8973@1b {
+	vdd_dvfs: regulator@1b {
 		compatible = "maxim,max8973";
 		reg = <0x1b>;