* Allow coreboot to use the full 256 bytes of CMOS memory

* Allow coreboot to use the full 256 bytes of CMOS memory
* Make functions out of the accessor macros in mc146818rtc.c
* don't hide reserved cmos entries from coreboot, only from the user.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4170 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1