IB/ipath: kbuild infrastructure

Integrate the ipath core and OpenIB drivers into the kernel build
infrastructure.  Add entry to MAINTAINERS.

Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index c946581..f97657b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1451,6 +1451,12 @@
 M:	jjciarla@raiz.uncu.edu.ar
 S:	Maintained
 
+IPATH DRIVER:
+P:	Bryan O'Sullivan
+M:	support@pathscale.com
+L:	openib-general@openib.org
+S:	Supported
+
 IPX NETWORK LAYER
 P:	Arnaldo Carvalho de Melo
 M:	acme@conectiva.com.br