Instead of passing a variable around and painstakingly making sure that
one target builds with it, and the others without, make IASL a
dependency of the "catch all" targets.
This also drops iasl as dependency from individual architecture targets,
but things are more orthogonal that way.
Note: instead of `make crossgcc-i386`, use `make crossgcc-i386 iasl`
Change-Id: I8cd2e89acdd0f795836571470bad28fbf8797f58
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/13563
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>