MAINTAINERS: update mailing list address for NTB subsystem

NTB mailing list is moving from linux-ntb@googlegroups.com to
ntb@lists.linux.dev in order to get better archive and lore support.
Update all entries in MAINTAINERS.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

Author: davejiang

MAINTAINERS

@@ -13674,15 +13674,15 @@ F:	scripts/nsdeps
 NTB AMD DRIVER
 M:	Sanjay R Mehta <sanju.mehta@amd.com>
 M:	Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
-L:	linux-ntb@googlegroups.com
+L:	ntb@lists.linux.dev
 S:	Supported
 F:	drivers/ntb/hw/amd/
 
 NTB DRIVER CORE
 M:	Jon Mason <jdmason@kudzu.us>
 M:	Dave Jiang <dave.jiang@intel.com>
 M:	Allen Hubbe <allenbh@gmail.com>
-L:	linux-ntb@googlegroups.com
+L:	ntb@lists.linux.dev
 S:	Supported
 W:	https://github.com/jonmason/ntb/wiki
 T:	git git://github.com/jonmason/ntb.git
@@ -13694,13 +13694,13 @@ F:	tools/testing/selftests/ntb/
 
 NTB IDT DRIVER
 M:	Serge Semin <fancer.lancer@gmail.com>
-L:	linux-ntb@googlegroups.com
+L:	ntb@lists.linux.dev
 S:	Supported
 F:	drivers/ntb/hw/idt/
 
 NTB INTEL DRIVER
 M:	Dave Jiang <dave.jiang@intel.com>
-L:	linux-ntb@googlegroups.com
+L:	ntb@lists.linux.dev
 S:	Supported
 W:	https://github.com/davejiang/linux/wiki
 T:	git https://github.com/davejiang/linux.git