stm32mp1: add stboard command

Allow to update board identification in OTP 59.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/board/st/stm32mp1/Kconfig b/board/st/stm32mp1/Kconfig
index 5f81f94..87216c0 100644
--- a/board/st/stm32mp1/Kconfig
+++ b/board/st/stm32mp1/Kconfig
@@ -15,4 +15,11 @@
 config ENV_OFFSET
 	default 0x280000 if ENV_IS_IN_SPI_FLASH
 
+config CMD_STBOARD
+	bool "stboard - command for OTP board information"
+	default y
+	help
+	  This compile the stboard command to
+	  read and write the board in the OTP.
+
 endif