mosys: Fix build break in SDK builder.

Directly add the warning '-Wno-address-of-packed-member' instead
of trying to query it.

BUG=chromium:993493
TEST=mosys builds

Change-Id: I9f3330e85da7f438ddac021f550282d34fe85fde
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/1753069
Reviewed-by: Simon Glass <sjg@chromium.org>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
(cherry picked from commit ace739db9e1b8b6932a1ff514dfcf77039302118)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/1758233
Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
Commit-Queue: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Auto-Submit: Patrick Georgi <pgeorgi@chromium.org>
1 file changed