board: stm32f469-disco: add splash screen with stmicroelectronics logo

Display the STMicroelectronics logo with features VIDEO_LOGO and
SPLASH_SCREEN on stm32f469-disco board.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/include/configs/stm32f469-discovery.h b/include/configs/stm32f469-discovery.h
index 62a7e9a..75bb9cd 100644
--- a/include/configs/stm32f469-discovery.h
+++ b/include/configs/stm32f469-discovery.h
@@ -31,6 +31,8 @@
 			"scriptaddr=0x00418000\0"		\
 			"pxefile_addr_r=0x00428000\0" \
 			"ramdisk_addr_r=0x00438000\0"		\
+			"splashimage=0x00448000\0" \
+			"splashpos=m,m\0" \
 			BOOTENV
 
 #endif /* __CONFIG_H */