Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Use a more standard way to name those tables, as they're currently used
by the script that coverts those tables to be loaded via userspace.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Instead of having one big keytable with 2 protocols inside, break it
into two separate tables, being one for NEC and another for RC-5 variants,
and properly identify what variant should be used at the boards entries.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>