media: a few more typos at staging, pci, platform, radio and usb

Those typos were left over from codespell check, on
my first pass or belong to code added after the time I
ran it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/pci/cx18/cx18-dvb.c

@@ -458,7 +458,7 @@ void cx18_dvb_unregister(struct cx18_stream *stream)
 	dvb_unregister_adapter(dvb_adapter);
 }
 
-/* All the DVB attach calls go here, this function get's modified
+/* All the DVB attach calls go here, this function gets modified
  * for each new card. cx18_dvb_start_feed() will also need changes.
  */
 static int dvb_register(struct cx18_stream *stream)

drivers/media/pci/saa7164/saa7164-dvb.c

@@ -529,7 +529,7 @@ int saa7164_dvb_unregister(struct saa7164_port *port)
 	return 0;
 }
 
-/* All the DVB attach calls go here, this function get's modified
+/* All the DVB attach calls go here, this function gets modified
  * for each new card.
  */
 int saa7164_dvb_register(struct saa7164_port *port)