[media] rc: img-ir: add NEC decoder module

Add an img-ir module for decoding the NEC and extended NEC infrared
protocols.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --cc drivers/media/rc/img-ir/Kconfig
Simple merge

diff --cc drivers/media/rc/img-ir/Makefile
Simple merge

diff --cc drivers/media/rc/img-ir/img-ir-hw.c
Simple merge

diff --cc drivers/media/rc/img-ir/img-ir-nec.c
Simple merge