Merge "Switch "system/core/base" ref to "system/libbase"" am: cc1d613e76 am: 04b0bdee74 am: 4a70e3bf2f am: e2fe5c416b

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1470497

Change-Id: I4bc2b64599496a225d3a2093175199eeca3ee0b5