linux-imx

MA-16168 [#imx-1903] Fix GPU driver build error and not work issue on 5.4 kernel

Some drm common code changed, gpu driver need do the matched update on 5.4 kernel.
1. Some drm API name changed.
   drm_gem_object_unreference_unlocked() rename as drm_gem_object_put_unlocked().
   drm_dev_unref() rename as drm_dev_put().
2. Drm/prime remove DRIVER_PRIME, driver needs do the matched update.
3. API gem_prime_export remove input parameter "struct drm_device *dev".

Signed-off-by: Richard Liu <xuegang.liu@nxp.com>