Fix WPA supplicant / hostapd build errors for CM 10.2

Similar to a fix for a similar device (note the WLAN driver is a
different one):

http://forum.xda-developers.com/showpost.php?p=26328597&postcount=20

Change-Id: I8f46c8d330be995e46453888711f3dc5ff3db042
Fix boot image creation (ramdisk offset)

Change-Id: Id26f11cd798bcafd5fb43e2ea973854046bab2fe
Merge pull request #3 from thp/master

Fix WPA supplicant / hostapd build errors for CM 10.2