drm/amdgpu/pm: add smu i2c implementation for navi1x (v5)

And handle more than just EEPROMs.

v2: fix restart handling between transactions.
v3: handle 7 to 8 bit addr conversion
v4: Fix &req --> req. (Luben T)
v5: squash in i2c channel fix

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
This commit is contained in:
Alex Deucher 2021-01-21 14:17:34 -05:00
commit af01340bc4