ext4_utils: add default mke2fs.conf

Copy default configs from borg build machine and enable ext_attr.

Bug: 34947454
Test: make systemimage
Change-Id: I011b3d119f35beb0e78b804e62deff229775a0b0
(cherry picked from commit 87eb12642f68f5a8594893618cfab128da82ebd8)
2 files changed