MAINTAINERS: unify email addrs for Kevin Hilman

I have a couple different emails in here.  It's time to make them all
the same.

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

MAINTAINERS

@@ -7836,7 +7836,7 @@ S:	Maintained
 F:	arch/arm/*omap*/*clock*
 
 OMAP POWER MANAGEMENT SUPPORT
-M:	Kevin Hilman <khilman@deeprootsystems.com>
+M:	Kevin Hilman <khilman@kernel.org>
 L:	linux-omap@vger.kernel.org
 S:	Maintained
 F:	arch/arm/*omap*/*pm*
@@ -7942,7 +7942,7 @@ F:	arch/arm/*omap*/usb*
 OMAP GPIO DRIVER
 M:	Grygorii Strashko <grygorii.strashko@ti.com>
 M:	Santosh Shilimkar <ssantosh@kernel.org>
-M:	Kevin Hilman <khilman@deeprootsystems.com>
+M:	Kevin Hilman <khilman@kernel.org>
 L:	linux-omap@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/gpio/gpio-omap.txt
@@ -9952,7 +9952,7 @@ F:	arch/arm/mach-s3c24xx/bast-irq.c
 
 TI DAVINCI MACHINE SUPPORT
 M:	Sekhar Nori <nsekhar@ti.com>
-M:	Kevin Hilman <khilman@deeprootsystems.com>
+M:	Kevin Hilman <khilman@kernel.org>
 T:	git git://gitorious.org/linux-davinci/linux-davinci.git
 Q:	http://patchwork.kernel.org/project/linux-davinci/list/
 S:	Supported