Set mode bits for /system/etc/recovery.img.

/system/etc/recovery.img defaults to 0644. Change it to 0440.

Bug: 22641135
Change-Id: I45cdb0cc1b58f35fbcd0f16e7cc6c4eef63b0b74
(cherry picked from commit b602e6f9a3ad25e034e42fd6dc5dc28e52c1c3e5)
1 file changed