Use Wifi firmware from BCM Common.We are wrongly advertise as B1 anyway.
See https://github.com/CyanogenMod/android_device_lge_p880/blob/cm-11.0/configs/bcmdhd.cal#L1 for proof.We are actually Rev.B2
Note:Firmware paths needs change too in kernel config
Change-Id: I556685633f628f5ad6b22a666166ec5313bf0c8f