The switchover from populate-exfs.sh to mke2fs forgot to preserve
pseudo, add it back.
(From OE-Core rev: 032309928f931b32cf63a0ebf174de029ba17401)
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>