staging: Add proper selection of WIRELESS_EXT and WEXT_PRIV

After the incorporation of the patch entitled "wext: refactor", some
of the wireless drivers in drivers/staging fail to build because they
need to have CONFIG_WIRELESS_EXT and CONFIG_WEXT_PRIV defined.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/staging/rtl8187se/Kconfig

 config RTL8187SE
 	tristate "RealTek RTL8187SE Wireless LAN NIC driver"
 	depends on PCI
-	depends on WIRELESS_EXT
+	select WIRELESS_EXT
+	select WEXT_PRIV
 	default N
 	---help---

drivers/staging/rtl8192e/Kconfig

 config RTL8192E
 	tristate "RealTek RTL8192E Wireless LAN NIC driver"
 	depends on PCI
-	depends on WIRELESS_EXT
+	select WIRELESS_EXT
+	select WEXT_PRIV
 	default N
 	---help---

drivers/staging/vt6655/Kconfig

 config VT6655
    tristate "VIA Technologies VT6655 support"
-   depends on WIRELESS_EXT && PCI
+   depends on PCI
+   select WIRELESS_EXT
+   select WEXT_PRIV
    ---help---
    This is a vendor-written driver for VIA VT6655.
 

drivers/staging/vt6656/Kconfig

 config VT6656
 	tristate "VIA Technologies VT6656 support"
-	depends on WIRELESS_EXT && USB
+	depends on USB
+	select WIRELESS_EXT
+	select WEXT_PRIV
 	---help---
 	This is a vendor-written driver for VIA VT6656.