util/xcompile: Only use -Wno-address-of-packed-member if supported

I thought gcc ignores -Wno-* stuff that it doesn't know about, but
apparently not.

Change-Id: If265a7bcdcfb5e83cc06b1f914dd6bab964eaca6
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37037
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

0 files changed, 0 insertions, 0 deletions