MAINTAINERS: GPIO-INTEL-MID: add maintainer

Assign david.a.cohen@linux.intel.com as maintainer of Intel MID gpio
driver at drivers/gpio/gpio-intel-mid.c.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

MAINTAINERS

@@ -1903,6 +1903,12 @@ W:	http://bu3sch.de/btgpio.php
 S:	Maintained
 F:	drivers/gpio/gpio-bt8xx.c
 
+INTEL-MID GPIO DRIVER
+M:	David Cohen <david.a.cohen@linux.intel.com>
+L:	linux-gpio@vger.kernel.org
+S:	Maintained
+F:	drivers/gpio/gpio-intel-mid.c
+
 BTRFS FILE SYSTEM
 M:	Chris Mason <chris.mason@fusionio.com>
 L:	linux-btrfs@vger.kernel.org