Fix aosp_qemu_trusty build error

base_system.mk references the tethering module in
PRODUCT_UPDATABLE_BOOT_JARS, however this qemu target does not inherit
from base_system.mk and is missing the jar.
Fix the error by adding an entry for the module.

Fixes: 148288389
Test: forrest build builds
Change-Id: Ifd5f90bab54af593b298a6646c70c5bbe34bfda1
1 file changed