ext4: Fix ext4_should_journal_data() for EA inodes

Similarly to directories, EA inodes do only journalled modifications to
their data. Change ext4_should_journal_data() to return true for them so
that we don't have to special-case them during truncate.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191105164437.32602-7-jack@suse.cz


Signed-off-by: Theodore Ts'o <tytso@mit.edu>