e2fsck: read only parameter incorrectly compared

Don't check for lost+found in read only mode.

Change-Id: Ib5861f615b60cf5d0836af73539dd53c70638de5
Merge "e2fsck: read only parameter incorrectly compared"
Merge branch 'master' of https://android.googlesource.com/platform/external/e2fsprogs into 4.4.2