MAINTAINERS: update email address in cifs and ksmbd entry

Steve mainly checks his email through his gmail address.
I also check issues through another email address.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: namjaejeon

MAINTAINERS

@@ -5775,6 +5775,7 @@ X:	drivers/clk/clkdev.c
 
 COMMON INTERNET FILE SYSTEM CLIENT (CIFS and SMB3)
 M:	Steve French <sfrench@samba.org>
+M:	Steve French <smfrench@gmail.com>
 R:	Paulo Alcantara <pc@manguebit.com> (DFS, global name space)
 R:	Ronnie Sahlberg <ronniesahlberg@gmail.com> (directory leases, sparse files)
 R:	Shyam Prasad N <sprasad@microsoft.com> (multichannel)
@@ -12655,7 +12656,9 @@ F:	tools/testing/selftests/
 
 KERNEL SMB3 SERVER (KSMBD)
 M:	Namjae Jeon <linkinjeon@kernel.org>
+M:	Namjae Jeon <linkinjeon@samba.org>
 M:	Steve French <sfrench@samba.org>
+M:	Steve French <smfrench@gmail.com>
 R:	Sergey Senozhatsky <senozhatsky@chromium.org>
 R:	Tom Talpey <tom@talpey.com>
 L:	linux-cifs@vger.kernel.org