apexd: Allow mounting on squashfs.

O_DIRECT does not work on squashfs file systems, and will return EINVAL. Try
without O_DIRECT.

On boards with `BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE := squashfs` apexd will fail
to loop mount.  Unfortunately O_DIRECT is not possible because image is
compressed on disk and we do need the buffering.

Bug: 167309455
Bug: 168746790
Test: tast run kukui-arc-r arc.Boot.vm
Change-Id: I9da1af535cb18cebed751ecab0e250780e2df377
1 file changed