How to Build
    1. Get Toolchain (arm-eabi-4.7.0) and install
       Android Source Download site( http://source.android.com/source/downloading.html)   

    2. Edit build_kernel.sh
       edit "CROSS_COMPILE" to right toolchain path(You downloaded).
	Ex)  CROSS_COMPILE=~/your toolchain path/arm-eabi-4.7/bin/arm-eabi-	

    3. run build_kernel.sh
     
    4.Output Files
      -	kernel : kernel/obj/arch/arm/boot/zImaze
      -	module : kernel/drivers/*/*.ko
 
   
How to get source code of wlan.ko(wlan URL): 
https://www.codeaurora.org/cgit/quic/la/platform/vendor/qcom-opensource/wlan/prima/tag/?h=LNX.LA.2.7.3&id=LNX.LA.3.5.1-09210-8x74.0