colibri-imx6ull: support building with DM_VIDEO=y

1. This fixes linking issues when building with DM_VIDEO enabled mxsfb
driver.
2. Provide proper defines for both VIDEO=y and DM_VIDEO=y.
Signed-off-by: NIgor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: NOleksandr Suvorov <oleksandr.suvorov@toradex.com>

arch/arm/mach-imx/mx6/soc.c

@@ -554,7 +554,7 @@ const struct boot_mode soc_boot_modes[] = {
 void reset_misc(void)
 {
 #ifndef CONFIG_SPL_BUILD
-#ifdef CONFIG_VIDEO_MXS
+#if defined(CONFIG_VIDEO_MXS) && !defined(CONFIG_DM_VIDEO)
 	lcdif_power_down();
 #endif
 #endif

include/configs/colibri-imx6ull.h

@@ -170,7 +170,7 @@
 #define CONFIG_SYS_DFU_DATA_BUF_SIZE	SZ_16M
 #define DFU_DEFAULT_POLL_TIMEOUT	300
 
-#ifdef CONFIG_VIDEO
+#if defined(CONFIG_VIDEO) || defined(CONFIG_DM_VIDEO)
 #define CONFIG_VIDEO_MXS
 #define MXS_LCDIF_BASE MX6UL_LCDIF1_BASE_ADDR
 #define CONFIG_VIDEO_LOGO