ARM: dts: stm32: DT alignment with kernel v5.3

Device tree and binding alignment with kernel v5.3
and converted to SPDX.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/dts/stm32mp157c-ed1.dts b/arch/arm/dts/stm32mp157c-ed1.dts
index 1d9cc73..66deca1 100644
--- a/arch/arm/dts/stm32mp157c-ed1.dts
+++ b/arch/arm/dts/stm32mp157c-ed1.dts
@@ -176,10 +176,10 @@
 				regulator-over-current-protection;
 			};
 
-			 bst_out: boost {
+			bst_out: boost {
 				regulator-name = "bst_out";
 				interrupts = <IT_OCP_BOOST 0>;
-			 };
+			};
 
 			vbus_otg: pwr_sw1 {
 				regulator-name = "vbus_otg";