This patch makes several CMOS/NVRAM reads dependent on whether there's a table to...

This patch makes several CMOS/NVRAM reads dependent on whether there's a table to read.  Otherwise you never know what you'll get from the factory BIOS.  There are probably more, but these are the ones compiled into the s2895.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3959 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1