Make libgsi_headers available to APEXes.

libfstab depends on it. The ART module needs libfstab to determine
whether to put dexopt artifacts in dalvik-cache.

Bug: 287958783
Test: m
(cherry picked from https://android-review.googlesource.com/q/commit:642e76fdc3682c4ba364a33e7c11c036d0e1ee39)
Merged-In: Icb26dd3f13c1bd585fe2e986bfcf61f85664b3de
Change-Id: Icb26dd3f13c1bd585fe2e986bfcf61f85664b3de
1 file changed