Change History
--------------

v2:
- Make firmware version check correctly. Firmware
  versions >= 1.80 should all support 40 UVD
  instances.
- Replace AMDGPU_MAX_UVD_HANDLES with max_handles
  variable.

v1:
- The firmware can handle upto 40 UVD sessions.
Signed-off-by: NArindam Nath <arindam.nath@amd.com>
Signed-off-by: NAyyappa Chandolu <ayyappa.chandolu@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>