[PATCH] libertas: gcc 4.1 compile fix.

[Andreas Henriksson]

  LD      drivers/net/wireless/libertas/built-in.o
  CC [M]  drivers/net/wireless/libertas/wlan_main.o
  CC [M]  drivers/net/wireless/libertas/wlan_fw.o
  CC [M]  drivers/net/wireless/libertas/wlan_wext.o
drivers/net/wireless/libertas/wlan_wext.c: In function 'wlan_set_linkmode_ioctl':
drivers/net/wireless/libertas/wlan_wext.c:3279: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c: In function 'wlan_set_radiomode_ioctl':
drivers/net/wireless/libertas/wlan_wext.c:3314: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c: In function 'wlan_set_debugmode_ioctl':
drivers/net/wireless/libertas/wlan_wext.c:3347: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c: In function 'wlan_do_ioctl':
drivers/net/wireless/libertas/wlan_wext.c:4013: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c:4091: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c:4238: warning: cast from pointer to integer of different size
drivers/net/wireless/libertas/wlan_wext.c:4255: warning: cast to pointer from integer of different size
drivers/net/wireless/libertas/wlan_wext.c:4259: warning: cast to pointer from integer of different size
drivers/net/wireless/libertas/wlan_wext.c:4263: warning: cast to pointer from integer of different size
  CC [M]  drivers/net/wireless/libertas/wlan_rx.o
  CC [M]  drivers/net/wireless/libertas/wlan_tx.o
  CC [M]  drivers/net/wireless/libertas/wlan_cmd.o
  CC [M]  drivers/net/wireless/libertas/wlan_cmdresp.o
  CC [M]  drivers/net/wireless/libertas/wlan_proc.o
  CC [M]  drivers/net/wireless/libertas/wlan_scan.o
  CC [M]  drivers/net/wireless/libertas/wlan_join.o
  CC [M]  drivers/net/wireless/libertas/wlan_11d.o
  CC [M]  drivers/net/wireless/libertas/if_usb.o
  LD [M]  drivers/net/wireless/libertas/usb8xxx.o