MAINTAINERS: add defconfig file to IMX section

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -760,6 +760,7 @@ S:	Maintained
 T:	git git://git.pengutronix.de/git/imx/linux-2.6.git
 F:	arch/arm/mach-imx/
 F:	arch/arm/plat-mxc/
+F:	arch/arm/configs/imx*_defconfig
 
 ARM/FREESCALE IMX6
 M:	Shawn Guo <shawn.guo@linaro.org>