Use CPU_QEMU_X86 as it is selected by both Qemu x86 mainboards.
Change-Id: I8d6bfbddeeb8f2c66c5ea7728a9919e7cda86e7e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39181
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>