The chip common and the PCIe code are accessing the sprom struct which
is not filled when these cores are initialized. Fix this by adding an
early initialize and fill the sprom struct before accessing it in other
code.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33600 3c298f89-4303-0410-b956-a3cf2f4a3e73
