stm32mp1: bsec: use device tree new compatible

Update bsec driver to use the device tree provided by Kernel.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/arch/arm/dts/stm32mp157c.dtsi b/arch/arm/dts/stm32mp157c.dtsi
index d1d0f90..50978ef 100644
--- a/arch/arm/dts/stm32mp157c.dtsi
+++ b/arch/arm/dts/stm32mp157c.dtsi
@@ -996,6 +996,13 @@
 			status = "disabled";
 		};
 
+		bsec: nvmem@5c005000 {
+			compatible = "st,stm32mp15-bsec";
+			reg = <0x5c005000 0x400>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
+
 		i2c6: i2c@5c009000 {
 			compatible = "st,stm32f7-i2c";
 			reg = <0x5c009000 0x400>;