tegra: video: Convert tegra20 LCD driver to driver model

Move this driver over to use driver model. This involves rearranging the
code somewhat. The effect is that everything is run from the probe() method.

Boards which use this are fixed up, but only seaboard is tested.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/configs/colibri_t20_defconfig b/configs/colibri_t20_defconfig
index 9b198e0..84e5bc5 100644
--- a/configs/colibri_t20_defconfig
+++ b/configs/colibri_t20_defconfig
@@ -11,8 +11,12 @@
 # CONFIG_CMD_FPGA is not set
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_NFS is not set
+CONFIG_DM_PMIC=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_PWM=y
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
+CONFIG_DM_VIDEO=y
 CONFIG_VIDEO_TEGRA20=y
 CONFIG_USE_PRIVATE_LIBGCC=y