Use LLNDK guard instead of builtin_available

APEXSUPPORT_API was a workaround when we had no support for
__ANDROID_VENDOR_API__. Since we have it now, use it instead of
builtin_available(android APEXSUPPORT_API).

Bug: 302088370
Test: consumerir HAL APEX loading consumerir.default from the same APEX
Test: ConsumerIrTest VtsHalIrTargetTest
Change-Id: I6c9cf7e4555f7f242cc61defe7a67e3d11d79f6e
1 file changed