Moved duplicated code of ALPS BSRU6 tuner to a standalone file.
Modified av7110 and budget drivers to include the new file.
Signed-off-by: NPerceval Anichini <perceval.anichini@streamvision.fr>
Signed-off-by: NOliver Endriss <o.endriss@gmx.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>