drm/amdgpu: Clean up errors in kgd_pp_interface.h

Fix the following errors reported by checkpatch:

ERROR: open brace '{' following enum go on the same line
Signed-off-by: chenxuebing <chenxb_99091@126.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/kgd_pp_interface.h

@@ -244,8 +244,7 @@ enum pp_df_cstate {
  * @PP_PWR_LIMIT_DEFAULT: Default Power Limit
  * @PP_PWR_LIMIT_MAX: Maximum Power Limit
  */
-enum pp_power_limit_level
-{
+enum pp_power_limit_level {
 	PP_PWR_LIMIT_MIN = -1,
 	PP_PWR_LIMIT_CURRENT,
 	PP_PWR_LIMIT_DEFAULT,
@@ -260,8 +259,7 @@ enum pp_power_limit_level
  * @PP_PWR_TYPE_FAST: manages the ~10 ms moving average of APU power,
  * where supported.
  */
-enum pp_power_type
-{
+enum pp_power_type {
 	PP_PWR_TYPE_SUSTAINED,
 	PP_PWR_TYPE_FAST,
 };