[PATCH 2/7] drm/amd/dc: Use forward declaration instand of include header file

[Rex.Zhu@xxxxxxx (Rex Zhu)]

avoid build error:

drivers/gpu/drm/amd/amdgpu/../powerplay/inc/smu9_driver_if.h:342:3: error: redeclaration of enumerator â??WM_COUNTâ??
   WM_COUNT,
   ^
In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:32:0,
                 from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h:35,
                 from drivers/gpu/drm/amd/amdgpu/../display/modules/inc/mod_freesync.h:57,
                 from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_mode.h:48,
                 from drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:55,
                 from drivers/gpu/drm/amd/amdgpu/../powerplay/inc/amd_powerplay.h:33,
                 from drivers/gpu/drm/amd/amdgpu/../powerplay/inc/smumgr.h:26,
                 from drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vega10_smumgr.c:24:
drivers/gpu/drm/amd/amdgpu/../display/dc/dm_pp_smu.h:43:2: note: previous definition of â??WM_COUNTâ?? was here
  WM_COUNT,

Change-Id: If1bc3c268594bd571afcd2c032cc1295d048369f
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dm_services_types.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dm_services_types.h b/drivers/gpu/drm/amd/display/dc/dm_services_types.h
index fa26cf4..fceeb28 100644
--- a/drivers/gpu/drm/amd/display/dc/dm_services_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dm_services_types.h
@@ -29,7 +29,7 @@
 #include "os_types.h"
 #include "dc_types.h"
 
-#include "dm_pp_smu.h"
+struct pp_smu_funcs_rv;
 
 struct dm_pp_clock_range {
 	int min_khz;
-- 
1.9.1