qemu: Support ARM_LINUX_KERNEL_AS_BL33 to pass FDT address.

This lets the Linux kernel or any other image which expects an FDT in x0 be
loaded directly as BL33 without a separate bootloader on QEMU.

Signed-off-by: Andrew Walbran <qwandor@google.com>
Change-Id: Ia8eb4710a3d97cdd877af3b8aae36a2de7cfc654
4 files changed