Look forward to adding driver support for Realtek 8723bu.

[howardqiao]

Realtek 8723bu is a singe chip solution for wifi & bluetootn 4.0,
http://www.globalsources.com/gsol/I/USB-Bluetooth/p/sm/1133914681.htm
Linux kernel 4.6 has been add driver support for 8723bu,but I could not find the appropriate driver in rpi-4.6.y branch.If the kernel of Rpi supports 8723bu, you can make the old version of Raspberry Pi re- utilized, and is compatible with raspberry pie 3 applications.in the future, the official Raspberry Pi kernel will add support 8723bu do ?
Currently, I'm using this driver:
https://github.com/lwfinger/rtl8723bu
`
pi@raspberrypi:~ $ lsusb
Bus 001 Device 004: ID 0bda:b720 Realtek Semiconductor Corp.

pi@raspberrypi:~ $ lsmod | grep 8723
8723bu 856512 0
cfg80211 427817 1 8723bu

pi@raspberrypi:~ $ dmesg | grep 8723
[ 6.407906] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 6.407998] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 109.729444] RTL871X: rtl8723bu v4.3.6.11_12942.20141204_BTCOEX20140507-4E40
[ 109.729452] RTL871X: rtl8723bu BT-Coex version = BTCOEX20140507-4E40
[ 109.891721] usbcore: registered new interface driver rtl8723bu

pi@raspberrypi:~ $ iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"Mywifi" Nickname:"WIFI@REALTEK"
Mode:Managed Frequency:2.412 GHz Access Point: D4:EE:07:19:2A:F6
Bit Rate:150 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=100/100 Signal level=69/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
`

Offical linux kernel support for rtl8723bu:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c?id=refs/tags/v4.6.4