staging: wilc1000: get mac address after setting drv handler

This patch moves wilc_get_mac_address and address memcpy function after
calling wilc_set_wif_drv_handler to get selected mac address.

Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>