Make ramdisk_available. am: 7dd4553991 Change-Id: I161449e90ad91359cb7bb98c91078ab51e3b54b5 Cr-Mirrored-From: https://chromium.googlesource.com/aosp/platform/system/core Cr-Mirrored-Commit: 31bd607f6c5146934da8de7cc74a6d0d4ee935c4