libext2fs: add verity flag to EXT2_LIB_FEATURE_RO_COMPAT_SUPP

libext2fs: add verity flag to EXT2_LIB_FEATURE_RO_COMPAT_SUPP

The new ro_compat filesystem feature flag for fs-verity was added to
EXT2_FEATURE_RO_COMPAT_SUPP, but that's not actually used by e2fsprogs
itself.  So contrary to the v1.44.4 release notes, 'mke2fs -O verity'
doesn't actually work, nor does e2fsck allow the filesystem to have the
verity feature.  Fix it by adding the flag to the correct place
(EXT2_LIB_FEATURE_RO_COMPAT_SUPP) too.

Fixes: faae7aa00df0 ("Reserve codepoints for the fsverity feature.")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>