drm/amdgpu/swsmu: add smu v14_0_0 driver if file

Add initial smu v14_0_0 driver if file

v2: squash in updates (Alex)
v3: update interface (Alex)

Signed-off-by: Li Ma <li.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>