Revert "Use host_linux instead of linux_glibc to support musl as well"

This reverts commit 961538b44a37648388f3a7474a18ad4f30219345.

Reason for revert: breaks musl build, musl already has the bionic copy of the linux headers and doesn't need the linux-private directory.

Change-Id: I9e435032d45c0769dbdbc82f64edc3dbd662bc42
1 file changed