Revert "drm/amdgpu: align pp_power_profile_mode with kernel docs"

This reverts commit bbb05f8a.

This breaks some manual setting of the profile mode in
certain cases.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3600


Signed-off-by: Alex Deucher <alexander.deucher@amd.com>