stm32mp1: use MULTI_CONSOLE_API

Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/plat/st/stm32mp1/platform.mk b/plat/st/stm32mp1/platform.mk
index 678a852..f4a0ca4 100644
--- a/plat/st/stm32mp1/platform.mk
+++ b/plat/st/stm32mp1/platform.mk
@@ -8,6 +8,7 @@
 ARM_WITH_NEON		:=	yes
 BL2_AT_EL3		:=	1
 USE_COHERENT_MEM	:=	0
+MULTI_CONSOLE_API	:=	1
 
 STM32_TF_VERSION	?=	0