MAINTAINERS: update Kevin's email for OMAP PM section

Change my email to TI email address for OMAP PM maintenance.

Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 560ecce..939e852 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4501,7 +4501,7 @@
 F:	arch/arm/*omap*/*clock*
 
 OMAP POWER MANAGEMENT SUPPORT
-M:	Kevin Hilman <khilman@deeprootsystems.com>
+M:	Kevin Hilman <khilman@ti.com>
 L:	linux-omap@vger.kernel.org
 S:	Maintained
 F:	arch/arm/*omap*/*pm*