msm: kgsl: Add a pwrscale policy to interact with msm_dcvs

This pwrscale policy provides per-core idle information to the
msm_dcvs driver.  It accepts frequency updates from the msm_dcvs
driver and updates the core frequency as needed.

Change-Id: I201cfcb6ceedc19c27f7848781813d9c477f9f83
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrscale.c b/drivers/gpu/msm/kgsl_pwrscale.c
index d0b2a41..1cecbc7 100644
--- a/drivers/gpu/msm/kgsl_pwrscale.c
+++ b/drivers/gpu/msm/kgsl_pwrscale.c
@@ -45,6 +45,9 @@
 #ifdef CONFIG_MSM_SLEEP_STATS_DEVICE
 	&kgsl_pwrscale_policy_idlestats,
 #endif
+#ifdef CONFIG_MSM_DCVS
+	&kgsl_pwrscale_policy_msm,
+#endif
 	NULL
 };