stm32mp1: print information about SoC

This information is located in DBGMCU registers.

Change-Id: I480aa046fed9992e3d9665b1f0520bc4b6cfdf30
Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h b/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
index a878308..498a4f2 100644
--- a/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
+++ b/plat/st/stm32mp1/include/stm32mp1_dbgmcu.h
@@ -7,6 +7,12 @@
 #ifndef STM32MP1_DBGMCU_H
 #define STM32MP1_DBGMCU_H
 
+#include <stdint.h>
+
+/* Get chip version and ID from DBGMCU registers */
+int stm32mp1_dbgmcu_get_chip_version(uint32_t *chip_version);
+int stm32mp1_dbgmcu_get_chip_dev_id(uint32_t *chip_dev_id);
+
 /*
  * Freeze watchdog when a debugger is attached, if the security configuration
  * allows it.