drm/amd/amdgpu: Add function prototypes to headers

Add function prototypes to headers to reduce the number of
-Wmissing-prototypes warnings.

Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Arthur Grillo 2023-02-13 17:49:16 -03:00 • committed by Alex Deucher
commit 877b57c6b5