stm32mp1: configs: add CONFIG_DM_VIDEO

Activate command DM_VIDEO for LCD support

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig
index 5a372e1..7e5ae45 100644
--- a/configs/stm32mp15_basic_defconfig
+++ b/configs/stm32mp15_basic_defconfig
@@ -119,4 +119,5 @@
 CONFIG_USB_GADGET_VENDOR_NUM=0x0483
 CONFIG_USB_GADGET_PRODUCT_NUM=0x5720
 CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_DM_VIDEO=y
 CONFIG_FDT_FIXUP_PARTITIONS=y