Convert CONFIG_IMX_VIDEO_SKIP et al to Kconfig

This converts the following to Kconfig:
   CONFIG_IMX_VIDEO_SKIP
   CONFIG_IMX_HDMI

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/gwventana_nand_defconfig b/configs/gwventana_nand_defconfig
index 6d57ad4..4e062e4 100644
--- a/configs/gwventana_nand_defconfig
+++ b/configs/gwventana_nand_defconfig
@@ -173,6 +173,8 @@
 # CONFIG_PANEL is not set
 CONFIG_I2C_EDID=y
 CONFIG_VIDEO_IPUV3=y
+CONFIG_IMX_VIDEO_SKIP=y
+CONFIG_IMX_HDMI=y
 CONFIG_SPLASH_SCREEN=y
 CONFIG_SPLASH_SCREEN_ALIGN=y
 CONFIG_HIDE_LOGO_VERSION=y