drm/radeon: comment out some currently unused ni dpm code

Keep it around for reference.

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

drivers/gpu/drm/radeon/ni_dpm.c

@@ -3862,11 +3862,13 @@ void ni_dpm_post_set_power_state(struct radeon_device *rdev)
 	ni_update_current_ps(rdev, new_ps);
 }
 
+#if 0
 void ni_dpm_reset_asic(struct radeon_device *rdev)
 {
 	ni_restrict_performance_levels_before_switch(rdev);
 	rv770_set_boot_state(rdev);
 }
+#endif
 
 union power_info {
 	struct _ATOM_POWERPLAY_INFO info;