arch/x86: Use fixed size limit with RELOCATABLE_RAMSTAGE

With RELOCATABLE_RAMSTAGE, variables RAMBASE and RAMTOP
have no meaning any more.

Change-Id: I711fe98a399177c2d3cb2a9dcdefba61031fb76d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/26812
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed