drivers: input: vs1838b: Add support for VS1838B

The VS1838B is one of the most found infrared receiver
found in electronic kits and is easy to setup with only
a single GPIO used for signal transmission (apart from
VCC and GND).
This new driver let applications use the VS1838B as an
input with events relayed as 0x0000<address><command>.

Only the NEC protocol is supported in this version but
more can be added later.
Link: https://github-wiki-see.page/m/CoreELEC/remotes/wiki/08.-NEC-IR-Protocol-Datasheet



This has been tested using the input_dump sample.

Signed-off-by: Bastien JAUNY <bastien.jauny@smile.fr>