Describe vrefint calibration cell to be retrieved through bsec.

Signed-off-by: Olivier Moysan <olivier.moysan@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 9c40b5e679f8..40d3959964cf 100644
--- a/arch/arm/boot/dts/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/stm32mp151.dtsi
@@ -1635,6 +1635,9 @@ bsec: efuse@5c005000 {
 			part_number_otp: part-number-otp@4 {
 				reg = <0x4 0x1>;
 			};
+			vrefint: vrefin_cal@52 {
+				reg = <0x52 0x2>;
+			};
 			ts_cal1: calib@5c {
 				reg = <0x5c 0x2>;
 			};
-- 
2.25.1