feat(st): protect UART during platform init

Protect the UART instance used for serial boot
with UART used for console.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: Ieee1557b34e7baa81594c3fbf0513191737027bf
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index eb8bc27..a8ffecb 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -167,7 +167,7 @@
 	}
 }
 
-#if STM32MP_UART_PROGRAMMER
+#if STM32MP_UART_PROGRAMMER || !defined(IMAGE_BL2)
 /*
  * UART Management
  */