UPSTREAM: erofs-utils: add an option to dump an inode by path

This is useful when playing around with EROFS images locally.
For example, it allows us to inspect block mappings of a filepath.

Cherry-picked from commit 80dbfd1e2622c7185b3ec743a33fe8531e340ef1
Link: https://lore.kernel.org/r/20211207140528.185442-1-hsiangkao@linux.alibaba.com
Signed-off-by: Kelvin Zhang <zhangkelvin@google.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Change-Id: I873f553b1ec08e20baeffd2367ddaf8f6bf42312
2 files changed