arm64: dts: exynos: adjust node names to DT spec in Exynos7 Espresso

The Devicetree specification expects device node names to have a generic
name, representing the class of a device.  Also the convention for node
names is to use hyphens, not underscores.

No functional changes.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201027170947.132725-12-krzk@kernel.org
diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index 92fecc5..695d4c1 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -87,7 +87,7 @@ &hsi2c_4 {
 	samsung,i2c-max-bus-freq = <200000>;
 	status = "okay";
 
-	s2mps15_pmic@66 {
+	pmic@66 {
 		compatible = "samsung,s2mps15-pmic";
 		reg = <0x66>;
 		interrupts = <2 IRQ_TYPE_NONE>;