kernel: add the wireless driver

The main wireless driver is 'drivers/net/wl'

Others are extended feature:

	drivers/net/ctf
	drivers/net/emf
	drivers/net/dpsta
	drivers/net/igs

You can check the info in drivers/net/hnd/Kconfig

All above drivers are binary object file from Broadcom.

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
kernel: add the ethernet driver of the router

The source code is located at:

  drivers/net/et

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
kernel: add other net drivers

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
kernel: add new function 'genobj' into build system

Signed-off-by: Jack Tan <jiankemeng@gmail.com>
kernel: fixup build error

Signed-off-by: Jack Tan <jiankemeng@gmail.com>