Revert "Wifi mac fix for hws7300u"

This reverts commit 8f613597318584609f0f90500f8ec02800594026.
wifi: Add support for wlan driver argument property.

This is needed on drivers, that for example, require a mac parameter to be sent
to the driver.

Change-Id: Ia1e8617b962aab8e1f6e95699da4083c20889598