Merge "repack_bootimg: changes the default path of --ramdisk_add" am: c1d56bbd1b am: bca59d92ab am: 9e3a1e8d4c am: b8021f3120 am: eacd6f2596

Original change: https://android-review.googlesource.com/c/platform/system/tools/mkbootimg/+/1688291

Change-Id: I28d5c1441d10492f8d7c3695734c4de9dede17e2