stm32mp1: rename stpmu1 to stpmic1

This is the correct name of the IP.
Rename stm32mp1_pmic files to stm32mp_pmic.

Change-Id: I238a7d1f9a1d099daf7788dc9ebbd3146ba2f15f
Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/fdts/stm32mp157c-ed1.dts b/fdts/stm32mp157c-ed1.dts
index e3dabe8..0c00b13 100644
--- a/fdts/stm32mp157c-ed1.dts
+++ b/fdts/stm32mp157c-ed1.dts
@@ -26,8 +26,8 @@
 	i2c-scl-falling-time-ns = <20>;
 	status = "okay";
 
-	pmic: stpmu1@33 {
-		compatible = "st,stpmu1";
+	pmic: stpmic@33 {
+		compatible = "st,stpmic1";
 		reg = <0x33>;
 		status = "okay";
 
@@ -36,7 +36,7 @@
 		st,usb_control_register = <0x30>;
 
 		regulators {
-			compatible = "st,stpmu1-regulators";
+			compatible = "st,stpmic1-regulators";
 
 			v3v3: buck4 {
 				regulator-name = "v3v3";