ext4: split inode_operations for encrypted symlinks off the rest

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc fs/ext4/ext4.h
Simple merge

diff --cc fs/ext4/inode.c
Simple merge

diff --cc fs/ext4/namei.c
Simple merge

diff --cc fs/ext4/symlink.c
Simple merge