media: MAINTAINERS: Pick ov5670 maintenance

Chiranjeevi's e-mail is bouncing:

   chiranjeevi.rapolu@intel.com
   DM3NAM02FT041.mail.protection.outlook.com
   Remote Server returned '550 5.4.1 Recipient address rejected: Access
   denied. AS(201806281)'

Assign the driver to myself.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

MAINTAINERS

@@ -15638,7 +15638,7 @@ F:	Documentation/devicetree/bindings/media/i2c/ovti,ov5647.yaml
 F:	drivers/media/i2c/ov5647.c
 
 OMNIVISION OV5670 SENSOR DRIVER
-M:	Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
+M:	Sakari Ailus <sakari.ailus@linux.intel.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 T:	git git://linuxtv.org/media_tree.git