V4L/DVB (9637): usb vendor_ids/product_ids are __le16

Noticed by sparse:
drivers/media/dvb/dvb-usb/af9015.c:756:25: warning: restricted __le16 degrades to integer
drivers/media/dvb/dvb-usb/af9015.c:744:28: warning: restricted __le16 degrades to integer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>