drm/amdgpu: Add Fiji DID 0x7300 common support

Signed-off-by: David Zhang <david1.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
Simple merge

diff --cc drivers/gpu/drm/amd/amdgpu/vi.c
Simple merge

diff --cc drivers/gpu/drm/amd/include/amd_shared.h
Simple merge