1. Compiling the driver
If you have previously compiled source code, the compiler can drive according to the following steps. Otherwise, please refer to the source code compiler section.
1.1 make modules executed in the source root directory.
After driving into the directory 1.2 successfully executed: kernel_imx / drivers / net / wireless / rtl8723bs, execute make. After the successful execution can see wlan.ko file in the driver directory.
If the make fails, modify the Makefile file /android_m6.0.1_sailfish/kernel_imx/drivers/net/wireless/rtl8723bs/ CROSS_COMPILE and KSRC, modify the source code to you Andrews corresponding directory. Position as shown below: 
1.3 wlan.ko copied to the out / target / product / sabresd_6dq / system / lib / modules / directory, if no modules folder created manually.
1.4 execute make snod, regenerate the system image.