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
diff --git a/bootstrap.bash b/bootstrap.bash
index 4db8539..726692a 100755
--- a/bootstrap.bash
+++ b/bootstrap.bash
@@ -15,9 +15,9 @@
 # limitations under the License.
 
 echo '==== ERROR: bootstrap.bash & ./soong are obsolete ====' >&2
-echo 'Use `m --skip-make` with a standalone OUT_DIR instead.' >&2
+echo 'Use `m --soong-only` with a standalone OUT_DIR instead.' >&2
 echo 'Without envsetup.sh, use:' >&2
-echo '  build/soong/soong_ui.bash --make-mode --skip-make' >&2
+echo '  build/soong/soong_ui.bash --make-mode --soong-only' >&2
 echo '======================================================' >&2
 exit 1