Merge branch 'master' of git://git.denx.de/u-boot-imx

Conflicts:
board/logicpd/imx31_litekit/config.mk
boards.cfg

Signed-off-by: Wolfgang Denk <wd@denx.de>

MX5: rename mx51 to mx5

Rename mx51 to mx5 in order to support more mx51
like-style SOCs such as MX53 and the followings.

Signed-off-by: Jason Liu <r64343@freescale.com>