MAINTAINERS: Change in maintainer for AMD NTB

I would like to take maintainership for AMD NTB

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Acked-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

MAINTAINERS

@@ -8648,7 +8648,7 @@ T:	git git://github.com/jonmason/ntb.git
 F:	drivers/ntb/hw/intel/
 
 NTB AMD DRIVER
-M:	Xiangliang Yu <Xiangliang.Yu@amd.com>
+M:	Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
 L:	linux-ntb@googlegroups.com
 S:	Supported
 F:	drivers/ntb/hw/amd/