Merge patch series "Miscellaneous fixes"

Jerome Forissier <jerome.forissier@linaro.org> says:

Miscellaneous fixes made when developing the lwIP series [1]. They are
posted separately since they make sense on their own. Subsequent
versions of the lwIP series will contain a squashed version of this one.

[1] http://patchwork.ozlabs.org/project/uboot/list/?series=420712&state=%2A&archive=both