libdrm/amdgpu - Fixup typedef not to hide pointer type

[Edward O'Callaghan]

Oops, turns out I mailed to dri-devel by mistake so resending here.

The following series fixes up libdrm/amdgpu such that to not hide
a pointer type behind a typedef.

Please Review,

Edward O'Callaghan (3):
 [PATCH 1/3] amdgpu: Fix amdgpu_va_handle typedef not to hide pointer
 [PATCH 2/3] amdgpu: Fix amdgpu_semaphore_handle typedef not to hide
 [PATCH 3/3] amdgpu: Fix amdgpu_bo_list_handle typedef not to hide