drm/amd/pp: Add struct profile_mode_setting for smu7

Move configurable profiling parameters to struct
profile_mode_setting and initialize current_profile_setting.

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