CIFS: add misssing SFM mapping for doublequote

commit 85435d7a15294f9f7ef23469e6aaf7c5dfcc54f0 upstream.

SFM is mapping doublequote to 0xF020

Without this patch creating files with doublequote fails to Windows/Mac

Signed-off-by: Bjoern Jacke <bjacke@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>