Fixed Building errors of 88W9098 driver for Kernel 3.11

The document is for 88w9098 users who is running lower version of linux kernel. just a reference for them.

Driver version:

PCIE-WLAN-UART-BT-9098-U16-X86-17.68.1.p81-17.26.1.p81-MXM5X17277_V0V1-MGPL