Pass --legacy to aapt2 compile for TeleService

This module produces warnings that are treated as errors if --legacy
is not passed.  --legacy is no longer being passed by default, so
add it here.

Bug: 135597368
Test: m java
Change-Id: Ief6478c7634132547026f6ee1791e3a7c58164cb
Merged-In: I8c1fa787302ecb43c0b5bf46f6d2d3f9776dfc54
Exempt-From-Owner-Approval: Noop change to this module
1 file changed