[coreboot] [PATCH v2] Add PC87382 support

[Sven Schnelle]

Hi List,

this patch adds support for NSC PC87382 Super I/O. It is
used in many Lenovo Notebooks as Docking LPC Switch.

v2 because of:

- The patch added some empty files
- missing newlines in Kconfig and Makefile.inc
- chip.h missed uart8250.h include
- add the Kconfig option in sorted order

Thanks to idler on irc for pointing that out.

Signed-off-by: Sven Schnelle