gpu: drm: exynos: Add extcon notification for hdmi connection
Currently, hdmi connection generates only uevent by drm core. In
addition, it has no information about connection state. But, Tizen
starts TV-out behavior along with extcon uevent. To this end, this
patch will add extcon notification for hdmi connection.
Signed-off-by: Dongwoo Lee <dwoo08.lee@samsung.com>
[sw0312.kim: port to v4.14]
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Change-Id: I20a2d13deff07e566ce4f50c7fc64600ce10ca9f