Convert CONFIG_VIDEO to Kconfig

This converts the following to Kconfig:
   CONFIG_VIDEO

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
diff --git a/configs/T1024QDS_SPIFLASH_defconfig b/configs/T1024QDS_SPIFLASH_defconfig
index 1a96a63..0998bff 100644
--- a/configs/T1024QDS_SPIFLASH_defconfig
+++ b/configs/T1024QDS_SPIFLASH_defconfig
@@ -7,6 +7,7 @@
 CONFIG_SPL_DRIVERS_MISC_SUPPORT=y
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI_SUPPORT=y
+CONFIG_VIDEO=y
 CONFIG_MPC85xx=y
 CONFIG_TARGET_T102XQDS=y
 CONFIG_FIT=y