Make it possible for gpio-ir-recv users to choose a map name.

Cc: Ravi Kumar V <kumarrav@codeaurora.org>
Signed-off-by: NBenoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>