On glk there's a 4MiB L2 cache all the time. Take advantage of that
by initializing a 1MiB cache-as-ram area.
BUG=b:72728953
Change-Id: Ia4e777a13607d8b70c05534b0a172f0ec6b04c51
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25645
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
fa529bb940