staging: wilc1000: reorder functions to avoid forward declaration in linux_wlan

Reorder the functions in linux_wlan.c file to avoid having explicit
declaration of static functions. Forward declaration is avoided
with the help of reordering the function.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>