drm/panfrost: avoid static declaration

This declaration can be avoided so change it.
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200710095409.407087-2-peron.clem@gmail.com

drivers/gpu/drm/panfrost/panfrost_devfreq.c

@@ -14,7 +14,24 @@
 #include "panfrost_gpu.h"
 #include "panfrost_regs.h"
 
-static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev);
+static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
+{
+	ktime_t now;
+	ktime_t last;
+
+	if (!pfdev->devfreq.devfreq)
+		return;
+
+	now = ktime_get();
+	last = pfdev->devfreq.time_last_update;
+
+	if (atomic_read(&pfdev->devfreq.busy_count) > 0)
+		pfdev->devfreq.busy_time += ktime_sub(now, last);
+	else
+		pfdev->devfreq.idle_time += ktime_sub(now, last);
+
+	pfdev->devfreq.time_last_update = now;
+}
 
 static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 				   u32 flags)
@@ -139,25 +156,6 @@ void panfrost_devfreq_suspend(struct panfrost_device *pfdev)
 	devfreq_suspend_device(pfdev->devfreq.devfreq);
 }
 
-static void panfrost_devfreq_update_utilization(struct panfrost_device *pfdev)
-{
-	ktime_t now;
-	ktime_t last;
-
-	if (!pfdev->devfreq.devfreq)
-		return;
-
-	now = ktime_get();
-	last = pfdev->devfreq.time_last_update;
-
-	if (atomic_read(&pfdev->devfreq.busy_count) > 0)
-		pfdev->devfreq.busy_time += ktime_sub(now, last);
-	else
-		pfdev->devfreq.idle_time += ktime_sub(now, last);
-
-	pfdev->devfreq.time_last_update = now;
-}
-
 void panfrost_devfreq_record_busy(struct panfrost_device *pfdev)
 {
 	panfrost_devfreq_update_utilization(pfdev);