ARM: dts: stm32: Fix reset for usart1 in scmi configuration

In SCMI configuration, usart1 is secure, so all its resources are secured
(clock and reset) and can't be set/unset by non-secure world but by OP-TEE.

Fixes: 6cccc8d396bf ("ARM: dts: stm32: add SCMI version of STM32 boards (DK1/DK2/ED1/EV1)")

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
index 7c8fec6..79494ec 100644
--- a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
@@ -135,7 +135,7 @@
 };
 
 &usart1 {
-	resets = <&rcc USART1_R>;
+	resets = <&scmi_reset RST_SCMI_USART1>;
 };
 
 &usart2 {