MAINTAINERS: Add entry for SPMI subsystem

I have the hardware and I've been reviewing SPMI patches when
they come on the list. Add myself as a reviewer in this area and
add the linux-arm-msm list because people subscribed there also
have the hardware.

Cc: Kiran Gunda <kgunda@codeaurora.org>
Cc: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -12527,6 +12527,15 @@ S:	Supported
 F:	Documentation/networking/spider_net.txt
 F:	drivers/net/ethernet/toshiba/spider_net*
 
+SPMI SUBSYSTEM
+R:	Stephen Boyd <sboyd@codeaurora.org>
+L:	linux-arm-msm@vger.kernel.org
+F:	Documentation/devicetree/bindings/spmi/
+F:	drivers/spmi/
+F:	include/dt-bindings/spmi/spmi.h
+F:	include/linux/spmi.h
+F:	include/trace/events/spmi.h
+
 SPU FILE SYSTEM
 M:	Jeremy Kerr <jk@ozlabs.org>
 L:	linuxppc-dev@lists.ozlabs.org