[Why]
Moving definition of transmitter control from atomfirmware
to internal header.

[How]
Update the command table code to call 1.7 and make it the
default fallback path.
Signed-off-by: NEric Bernstein <eric.bernstein@amd.com>
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NQingqing Zhuo <Qingqing.Zhuo@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>