drm/amdgpu: Update vm start, end, hole to support 57bit address

drm/amdgpu: Update vm start, end, hole to support 57bit address

Change gmc macro AMDGPU_GMC_HOLE_START/END/MASK to 57bit if vm root
level is PDB3 for 5-level page tables.

The macro access adev without passing adev as parameter is to minimize
the code change to support 57bit, then we have to add adev variable in
several places to use the macro.

Because adev definition is not available in all amdgpu c files which
include amdgpu_gmc.h, change inline function amdgpu_gmc_sign_extend to
macro.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Acked-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>