packages/apps/Terminal: use proper nativehelper headers

libnativeheader exports headers under nativeheader. These were
available before incorrectly as global headers in order to give
access to jni.h.

Test: modules using packages/apps/Terminal find headers
Bug: 63762847
Change-Id: I79ac33728bee7daada17c05146776aa3a006ae2c
1 file changed