s390: add some drivers/subsystems to the MAINTAINERS file

Add entries for s390/cio, s390/dasd and s390/pci.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

MAINTAINERS

@@ -7372,10 +7372,26 @@ W:	http://www.ibm.com/developerworks/linux/linux390/
 S:	Supported
 F:	arch/s390/
 F:	drivers/s390/
-F:	block/partitions/ibm.c
 F:	Documentation/s390/
 F:	Documentation/DocBook/s390*
 
+S390 COMMON I/O LAYER
+M:	Sebastian Ott <sebott@linux.vnet.ibm.com>
+M:	Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
+L:	linux-s390@vger.kernel.org
+W:	http://www.ibm.com/developerworks/linux/linux390/
+S:	Supported
+F:	drivers/s390/cio/
+
+S390 DASD DRIVER
+M:	Stefan Weinhuber <wein@de.ibm.com>
+M:	Stefan Haberland <stefan.haberland@de.ibm.com>
+L:	linux-s390@vger.kernel.org
+W:	http://www.ibm.com/developerworks/linux/linux390/
+S:	Supported
+F:	drivers/s390/block/dasd*
+F:	block/partitions/ibm.c
+
 S390 NETWORK DRIVERS
 M:	Ursula Braun <ursula.braun@de.ibm.com>
 M:	Frank Blaschka <blaschka@linux.vnet.ibm.com>
@@ -7385,6 +7401,15 @@ W:	http://www.ibm.com/developerworks/linux/linux390/
 S:	Supported
 F:	drivers/s390/net/
 
+S390 PCI SUBSYSTEM
+M:	Sebastian Ott <sebott@linux.vnet.ibm.com>
+M:	Gerald Schaefer <gerald.schaefer@de.ibm.com>
+L:	linux-s390@vger.kernel.org
+W:	http://www.ibm.com/developerworks/linux/linux390/
+S:	Supported
+F:	arch/s390/pci/
+F:	drivers/pci/hotplug/s390_pci_hpc.c
+
 S390 ZCRYPT DRIVER
 M:	Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
 M:	linux390@de.ibm.com