drm/msm/gpu: Remove unused bus scaling code

Remove the downstream bus scaling code. It isn't needed for for
compatibility with a downstream or vendor kernel. Get it out of the
way to clear space for devfreq support.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index e113d64..0de26b6 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -108,12 +108,7 @@ struct msm_gpu {
 	struct clk **grp_clks;
 	int nr_clocks;
 	struct clk *ebi1_clk, *core_clk, *rbbmtimer_clk;
-	uint32_t fast_rate, bus_freq;
-
-#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
-	struct msm_bus_scale_pdata *bus_scale_table;
-	uint32_t bsc;
-#endif
+	uint32_t fast_rate;
 
 	/* Hang and Inactivity Detection:
 	 */