Mark libarect and libmath as vendor_available

They are used by libui which is VNDK.

Bug: 37731063
Test: sailfish builds and boots
Test: BOARD_VNDK_VERSION=current m libui is successful
Change-Id: I7ecd9b482f8055aaa159e539d630d0034f4b7074
Merged-In: I7ecd9b482f8055aaa159e539d630d0034f4b7074
2 files changed