Make kotlinx_atomicfu available to apexes am: 77f1855d3a am: efe66f7ef9 am: bcbc0e970f am: c6aa263be3

Original change: https://android-review.googlesource.com/c/platform/external/kotlinx.atomicfu/+/1784035

Change-Id: Iea54c133aa832164a70f306a06f516040535ea51