Merge "Add macro for API level V." am: 40af03dcaf

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2506955

Change-Id: I136da1f2694f23fd7cfc3d77ba3bdb47500c4350
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>