This fixes issue that became visible after implementing post-CAR stage on
top of `340e4b8090 lib/cbmem_top: Add a common cbmem_top implementation`.
Compilation error was:
Forbidden global variables in romstage:
ffffff00 d top.2205
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Change-Id: I088ac824f9b66387843ae5810fd2c75a8b16d9db
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36976
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>