msm: kgsl: Respect power constraints for a full interval

No matter what type of constraint leave it in effect until
the constraint has expired.

Change-Id: I75118823fd484f87dda8e0f26fa3fe1ae12ca07d
Signed-off-by: Lucille Sylester <lsylvest@codeaurora.org>

drivers/gpu/msm/kgsl_pwrscale_trustzone.c

@@ -192,8 +192,6 @@ static void tz_idle(struct kgsl_device *device, struct kgsl_pwrscale *pwrscale)
 		val *= pwr->step_mul;
 
 	if ((pwr->constraint.type == KGSL_CONSTRAINT_NONE) ||
-			((pwr->active_pwrlevel + val) <
-			pwr->constraint.hint.pwrlevel.level) ||
 			(time_after(jiffies, pwr->constraint.expires))) {
 
 		kgsl_pwrctrl_pwrlevel_change(device,