V4L/DVB: get_dvb_firmware: Fix typo, sort list of components

Commiter: Oliver Endriss <o.endriss@gmx.de>

Fix typo. Sort list of components for better readability.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>