[media] radio-shark: remove a warning when CONFIG_PM is not defined

On alpha, allyesconfig doesn't have CONFIG_PM, and produces the following warnings:
	drivers/media/radio/radio-shark.c:274:13: warning: 'shark_resume_leds' defined but not used [-Wunused-function]
	drivers/media/radio/radio-shark2.c:240:13: warning: 'shark_resume_leds' defined but not used [-Wunused-function]
That's because those functions are used only at device resume.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/radio/radio-shark.c

@@ -271,6 +271,7 @@ static void shark_unregister_leds(struct shark_device *shark)
 	cancel_work_sync(&shark->led_work);
 }
 
+#ifdef CONFIG_PM
 static void shark_resume_leds(struct shark_device *shark)
 {
 	if (test_bit(BLUE_IS_PULSE, &shark->brightness_new))
@@ -280,6 +281,7 @@ static void shark_resume_leds(struct shark_device *shark)
 	set_bit(RED_LED, &shark->brightness_new);
 	schedule_work(&shark->led_work);
 }
+#endif
 #else
 static int shark_register_leds(struct shark_device *shark, struct device *dev)
 {

drivers/media/radio/radio-shark2.c

@@ -237,6 +237,7 @@ static void shark_unregister_leds(struct shark_device *shark)
 	cancel_work_sync(&shark->led_work);
 }
 
+#ifdef CONFIG_PM
 static void shark_resume_leds(struct shark_device *shark)
 {
 	int i;
@@ -246,6 +247,7 @@ static void shark_resume_leds(struct shark_device *shark)
 
 	schedule_work(&shark->led_work);
 }
+#endif
 #else
 static int shark_register_leds(struct shark_device *shark, struct device *dev)
 {