[media] em28xx: Make em28xx-input.c a separate module

Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
[mchehab@redhat.com: Changed the default to follow the em28xx selection]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
5 files changed