cpu/via/car: ensure CAR ends up zeroed out

We need to ensure the cache as ram area is set to all zeroes so that
car_migrated works.

Despite a comment claims the previous value is a test pattern it's
actually not used for any testing. Drop the comment too.

Change-Id: I1c91acbca8a860c2ed9c691d08d18718604682d8
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-on: https://review.coreboot.org/25796
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
1 file changed