trivial: fix typos "man[ae]g?ment" -> "management"

Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c
index 575bf9d..a123908 100644
--- a/drivers/media/radio/radio-mr800.c
+++ b/drivers/media/radio/radio-mr800.c
@@ -46,7 +46,7 @@
  * Version 0.11:	Converted to v4l2_device.
  *
  * Many things to do:
- * 	- Correct power managment of device (suspend & resume)
+ * 	- Correct power management of device (suspend & resume)
  * 	- Add code for scanning and smooth tuning
  * 	- Add code for sensitivity value
  * 	- Correct mistakes