drm/radeon/dpm: remove unnecessary checks in dpm_init
drm/radeon/dpm: remove unnecessary checks in dpm_init

No need to check rdev->pm.num_power_states; this is a vestige
of the old pm code.

Signed-off-by: Alex Deucher <08dc22c6156113f2deff178e35e3ed9b24d6af9e@amd.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs