[PATCH] ARM: dts: stm32: add part number for STM32MP15x

[Patrick Delaunay]

The STM32MP15x Device Part Number is located in the first 8 bits of OTP4,
this patch add its description as the NVMEM cell.

Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 arch/arm/boot/dts/stm32mp151.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi
index 4e437d3f2ed6..3cf78f706400 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1620,6 +1620,9 @@ bsec: efuse at 5c005000 {
 			reg = <0x5c005000 0x400>;
 			#address-cells = <1>;
 			#size-cells = <1>;
+			part_number_otp: part-number-otp at 4 {
+				reg = <0x4 0x1>;
+			};
 			ts_cal1: calib at 5c {
 				reg = <0x5c 0x2>;
 			};
-- 
2.25.1