drm/amdgpu: use same vce state definition in dpm and powerplay

drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c

drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

drivers/gpu/drm/amd/amdgpu/ci_dpm.c

drivers/gpu/drm/amd/amdgpu/kv_dpm.c

drivers/gpu/drm/amd/amdgpu/si_dpm.c

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

drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c

drivers/gpu/drm/amd/powerplay/hwmgr/processpptables.c

drivers/gpu/drm/amd/powerplay/inc/hwmgr.h

drivers/gpu/drm/amd/powerplay/inc/power_state.h