Merge "libsparse: Add method to create sparse file from buffer" am: 0a257c7715 Change-Id: I4f1cce78f1b6a110dcd2dafa823742ec28e821b0 Cr-Mirrored-From: https://chromium.googlesource.com/aosp/platform/system/core Cr-Mirrored-Commit: 095b7c805cd75ed4a6df1ba64dc81ae1e353c53f