drm/amd/pm: disable ac/dc on smu_v13_0_7

temporarily disable ac/dc on smu_v13_0_7 due to the force clock issue.

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>