stm32mp1: add timeout detection in reset driver

This change makes the platform to panic in case of peripheral reset
resource malfunction.

Change-Id: I17eb9cb045b78a4e5142a8c33b744e84992d732a
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Nicolas LE BAYON <nicolas.le.bayon@st.com>
diff --git a/include/drivers/st/stm32mp1_rcc.h b/include/drivers/st/stm32mp1_rcc.h
index 2f29e84..1922c48 100644
--- a/include/drivers/st/stm32mp1_rcc.h
+++ b/include/drivers/st/stm32mp1_rcc.h
@@ -280,6 +280,9 @@
 /* Offset between RCC_MP_xxxENSETR and RCC_MP_xxxENCLRR registers */
 #define RCC_MP_ENCLRR_OFFSET		U(4)
 
+/* Offset between RCC_xxxRSTSETR and RCC_xxxRSTCLRR registers */
+#define RCC_RSTCLRR_OFFSET		U(4)
+
 /* Fields of RCC_BDCR register */
 #define RCC_BDCR_LSEON			BIT(0)
 #define RCC_BDCR_LSEBYP			BIT(1)