fs/cachefiles: replace kerror by pr_err

Also add pr_fmt in internal.h

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --cc fs/cachefiles/bind.c
Simple merge

diff --cc fs/cachefiles/daemon.c
Simple merge

diff --cc fs/cachefiles/interface.c
Simple merge

diff --cc fs/cachefiles/internal.h
Simple merge

diff --cc fs/cachefiles/main.c
Simple merge

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

diff --cc fs/cachefiles/security.c
Simple merge

diff --cc fs/cachefiles/xattr.c
Simple merge