drm/amdgpu: remove duplicate function prototypes

There are two identical function prototypes in same header file

Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Xie 2017-06-08 14:21:28 -04:00 • committed by Alex Deucher
commit a7dba6483d