drm/amd/powerplay: calculate flexible array member's address.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -164,7 +164,7 @@ typedef struct _ATOM_Tonga_State {
 typedef struct _ATOM_Tonga_State_Array {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;		/* Number of entries. */
-	ATOM_Tonga_State states[1];	/* Dynamically allocate entries. */
+	ATOM_Tonga_State entries[1];	/* Dynamically allocate entries. */
 } ATOM_Tonga_State_Array;
 
 typedef struct _ATOM_Tonga_MCLK_Dependency_Record {

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

@@ -43,5 +43,8 @@
 	} while (0)
 
 
+#define GET_FLEXIBLE_ARRAY_MEMBER_ADDR(type, member, ptr, n)	\
+	(type *)((char *)&(ptr)->member + (sizeof(type) * (n)))
+
 #endif /* PP_DEBUG_H */