Define odm_available property

Define `odm_available` property for aidl_interface modules.
`odm_available` is the same as `vendor_available` except it installs
the vendor variant of the module to /odm or /vendor/odm.

Bug: 176147321
Test: build with odm_available: true for an aidl_interface module
Change-Id: I7f182db4cdbd792a299ec0ef5e4fe8f81f2c2562
3 files changed