msm: kgsl: switch sprintf calls to snprintf

Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c
index ab20e81..fb74c35 100644
--- a/drivers/gpu/msm/kgsl_pwrctrl.c
+++ b/drivers/gpu/msm/kgsl_pwrctrl.c
@@ -151,7 +151,7 @@
 {
 	struct kgsl_device *device = kgsl_device_from_dev(dev);
 	struct kgsl_pwrctrl *pwr = &device->pwrctrl;
-	return sprintf(buf, "%d\n", pwr->nap_allowed);
+	return snprintf(buf, PAGE_SIZE, "%d\n", pwr->nap_allowed);
 }
 
 
@@ -194,7 +194,7 @@
 {
 	struct kgsl_device *device = kgsl_device_from_dev(dev);
 	struct kgsl_pwrctrl *pwr = &device->pwrctrl;
-	return sprintf(buf, "%d\n", pwr->interval_timeout);
+	return snprintf(buf, PAGE_SIZE, "%d\n", pwr->interval_timeout);
 }
 
 DEVICE_ATTR(gpuclk, 0644, kgsl_pwrctrl_gpuclk_show, kgsl_pwrctrl_gpuclk_store);