x86: Add Phoenix/MSC BIOSes to lowmem corruption list

We have a board with a Phoenix/MSC BIOS which also corrupts the low
64KB of RAM, so add an entry to the table.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
LKML-Reference: <20091106154404.002648d9@marrow.netinsight.se>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>