plat/qemu: add "max" cpu support

Add support to qemu "max" cpu for both "qemu" ('virt') and
"qemu_sbsa" ('sbsa-ref') platforms.

Change-Id: I36e45c0a3c4e30ba546d2a3cb44dfef11a680305
Signed-off-by: Leif Lindholm <leif@nuviainc.com>
2 files changed