i.mx: i.mx6q: add the initial support for i.mx6q ARM2 board

Add the initial support for Freescale i.MX6Q Armadillo2 board
Support: MMC boot from slot 0/1, debug UART(UART4), usdhc.

There is two MMC slots on the boards:
mmc dev 0 -> connect USDHC3 -> the lower slot on the board,
mmc dev 1 -> connect USDHC4 -> the upper slot on the board,

Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc: Stefano Babic <sbabic@denx.de>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
diff --git a/boards.cfg b/boards.cfg
index bc8d008..ea9227b 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -180,6 +180,7 @@
 mx53loco                     arm         armv7       mx53loco            freescale      mx5		mx53loco:IMX_CONFIG=board/freescale/mx53loco/imximage.cfg
 mx53smd                      arm         armv7       mx53smd             freescale      mx5		mx53smd:IMX_CONFIG=board/freescale/mx53smd/imximage.cfg
 vision2                      arm         armv7       vision2             ttcontrol      mx5		vision2:IMX_CONFIG=board/ttcontrol/vision2/imximage_hynix.cfg
+mx6qarm2                     arm         armv7       mx6qarm2            freescale      mx6		mx6qarm2:IMX_CONFIG=board/freescale/mx6qarm2/imximage.cfg
 cm_t35                       arm         armv7       cm_t35              -              omap3
 omap3_overo                  arm         armv7       overo               -              omap3
 omap3_pandora                arm         armv7       pandora             -              omap3