Add a base to be used for allocation of all the SI476X specific
controls in the corresponding driver.
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NAndrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>