include/drm: drm_color_mgmt: include <linux/bitops.h> for the BIT() definition

Change-Id: I7adb17f7b5dcbdd3c5c80b11e4da3c664534068a
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>

video/drm: display: use color_encoding and color_range instead of private COLOR_SPACE

The old method to description color space and range is borrowing V4L2
defined, It's difficult to understand, so

video/drm: display: use color_encoding and color_range instead of private COLOR_SPACE

The old method to description color space and range is borrowing V4L2
defined, It's difficult to understand, so we change to DRM defined
property.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Change-Id: I7eacc60dfda912b9becae1ce026cdb82eebef7f8

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