MAINTAINERS: Add Arnd Bergmann as Syscon reviewer

The System Configuration (syscon) driver is an important one, which
effects many ARM-SoC based platforms.  I'm adding Arnd as a primary
reviewer as he is highly competent in this area and has a keen
interest in ARM-SoC.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 2ece1fb..fdeda6a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9558,6 +9558,13 @@
 F:	Documentation/devicetree/bindings/arc/
 F:	drivers/tty/serial/arc_uart.c
 
+SYSTEM CONFIGURATION (SYSCON)
+M:	Lee Jones <lee.jones@linaro.org>
+M:	Arnd Bergmann <arnd@arndb.de>
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
+S:	Supported
+F:	drivers/mfd/syscon.c
+
 SYSV FILESYSTEM
 M:	Christoph Hellwig <hch@infradead.org>
 S:	Maintained