Clear LOCAL_JACK_ENABLED for ANDROID_COMPILE_WITH_JACK=false

CL I2189055aac9deccc36b8eab8e949796dddadf7a1 moved the
ANDROID_COMPILE_WITH_JACK=false check to configure_local_jack.mk,
which broke some modules that use ifndef LOCAL_JACK_ENABLED to
change their behavior we jack is disabled.  Clear
DEFAULT_JACK_ENABLED when ANDROID_COMPILE_WITH_JACK=false so
that LOCAL_JACK_ENABLED is cleared.

Bug: 37483961
Test: m -j checkbuild
Change-Id: I0d08946c57182689624c57f4952d7cecaa0b82b3
diff --git a/core/config.mk b/core/config.mk
index 9475549..583909d 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -610,7 +610,11 @@
 FAT16COPY := build/tools/fat16copy.py
 CHECK_LINK_TYPE := build/tools/check_link_type.py
 
+ifeq ($(ANDROID_COMPILE_WITH_JACK),true)
 DEFAULT_JACK_ENABLED:=full
+else
+DEFAULT_JACK_ENABLED:=
+endif
 ifneq ($(ANDROID_JACK_EXTRA_ARGS),)
 JACK_DEFAULT_ARGS :=
 DEFAULT_JACK_EXTRA_ARGS := $(ANDROID_JACK_EXTRA_ARGS)