msm: kgsl: Allow userspace processes to turn off/on power features.

Primarily intended to allow Adreno Profiler to turn off the features
that confuse some of its metrics.

Change-Id: I22e0bd68147ef1631e3bd3f579e777866fb894c4
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 b5c6876..114053c 100644
--- a/drivers/gpu/msm/kgsl_pwrscale.c
+++ b/drivers/gpu/msm/kgsl_pwrscale.c
@@ -90,7 +90,7 @@
 	return ret;
 }
 
-PWRSCALE_ATTR(policy, 0644, pwrscale_policy_show, pwrscale_policy_store);
+PWRSCALE_ATTR(policy, 0666, pwrscale_policy_show, pwrscale_policy_store);
 
 static ssize_t pwrscale_avail_policies_show(struct kgsl_device *device,
 					    char *buf)