Use --skip-config --soong-only instead of --skip-make

--skip-make is deprecated because of its odd behavior around the
out/.soong.kati_enabled file.  Replace it with --skip-config --soong-only
instead, which will unambigiously skip running kati.

Bug: 204136549
Test: build/soong/tests/run_integration_tests.sh
Test: build/soong/scripts/build-mainline-modules.sh
Test: build/soong/scripts/build-ndk-prebuilts.sh
Change-Id: I629ee7542687aaafd68eea50346b0cf53eafe1ef