util/xcompile/xcompile: set up for aarch64

The tools for aarch64 on ubuntu are called
The type is

This now finds the right files for building on aarch64

This has only been tested on ubuntu saucy; the aarch64 toolchain
is in a very ill-defined state on most distros.

Change-Id: Ic1bbd40f0d72384d6e80287b850686292a252918
Signed-off-by: Ronald G. Minnich <rminnich@google.com>
Reviewed-on: http://review.coreboot.org/4035
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
1 file changed