wext: refactor

Refactor wext to
 * split out iwpriv handling
 * split out iwspy handling
 * split out procfs support
 * allow cfg80211 to have wireless extensions compat code
   w/o CONFIG_WIRELESS_EXT

After this, drivers need to
 - select WIRELESS_EXT	- for wext support
 - select WEXT_PRIV	- for iwpriv support
 - select WEXT_SPY	- for iwspy support

except cfg80211 -- which gets new hooks in wext-core.c
and can then get wext handlers without CONFIG_WIRELESS_EXT.

Wireless extensions procfs support is auto-selected
based on PROC_FS and anything that requires the wext core
(i.e. WIRELESS_EXT or CFG80211_WEXT).

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/Kconfig

@@ -67,6 +67,8 @@ config WAVELAN
 	tristate "AT&T/Lucent old WaveLAN & DEC RoamAbout DS ISA support"
 	depends on ISA && WLAN_PRE80211
 	select WIRELESS_EXT
+	select WEXT_SPY
+	select WEXT_PRIV
 	---help---
 	  The Lucent WaveLAN (formerly NCR and AT&T; or DEC RoamAbout DS) is
 	  a Radio LAN (wireless Ethernet-like Local Area Network) using the
@@ -90,6 +92,8 @@ config PCMCIA_WAVELAN
 	tristate "AT&T/Lucent old WaveLAN Pcmcia wireless support"
 	depends on PCMCIA && WLAN_PRE80211
 	select WIRELESS_EXT
+	select WEXT_SPY
+	select WEXT_PRIV
 	help
 	  Say Y here if you intend to attach an AT&T/Lucent Wavelan PCMCIA
 	  (PC-card) wireless Ethernet networking card to your computer.  This
@@ -102,6 +106,7 @@ config PCMCIA_NETWAVE
 	tristate "Xircom Netwave AirSurfer Pcmcia wireless support"
 	depends on PCMCIA && WLAN_PRE80211
 	select WIRELESS_EXT
+	select WEXT_PRIV
 	help
 	  Say Y here if you intend to attach this type of PCMCIA (PC-card)
 	  wireless Ethernet networking card to your computer.
@@ -123,6 +128,8 @@ config PCMCIA_RAYCS
 	tristate "Aviator/Raytheon 2.4GHz wireless support"
 	depends on PCMCIA && WLAN_80211
 	select WIRELESS_EXT
+	select WEXT_SPY
+	select WEXT_PRIV
 	---help---
 	  Say Y here if you intend to attach an Aviator/Raytheon PCMCIA
 	  (PC-card) wireless Ethernet networking card to your computer.
@@ -136,6 +143,7 @@ config LIBERTAS
 	tristate "Marvell 8xxx Libertas WLAN driver support"
 	depends on WLAN_80211
 	select WIRELESS_EXT
+	select WEXT_SPY
 	select LIB80211
 	select FW_LOADER
 	---help---
@@ -190,6 +198,8 @@ config AIRO
 	depends on ISA_DMA_API && WLAN_80211 && (PCI || BROKEN)
 	select WIRELESS_EXT
 	select CRYPTO
+	select WEXT_SPY
+	select WEXT_PRIV
 	---help---
 	  This is the standard Linux driver to support Cisco/Aironet ISA and
 	  PCI 802.11 wireless cards.
@@ -207,6 +217,7 @@ config ATMEL
       tristate "Atmel at76c50x chipset  802.11b support"
       depends on (PCI || PCMCIA) && WLAN_80211
       select WIRELESS_EXT
+      select WEXT_PRIV
       select FW_LOADER
       select CRC32
        ---help---
@@ -266,18 +277,21 @@ config AIRO_CS
 	  Cisco Linux utilities can be used to configure the card.
 
 config PCMCIA_WL3501
-      tristate "Planet WL3501 PCMCIA cards"
-      depends on EXPERIMENTAL && PCMCIA && WLAN_80211
-      select WIRELESS_EXT
-       ---help---
-         A driver for WL3501 PCMCIA 802.11 wireless cards made by Planet.
-	 It has basic support for Linux wireless extensions and initial
-	 micro support for ethtool.
+	tristate "Planet WL3501 PCMCIA cards"
+	depends on EXPERIMENTAL && PCMCIA && WLAN_80211
+	select WIRELESS_EXT
+	select WEXT_SPY
+	help
+	  A driver for WL3501 PCMCIA 802.11 wireless cards made by Planet.
+	  It has basic support for Linux wireless extensions and initial
+	  micro support for ethtool.
 
 config PRISM54
 	tristate 'Intersil Prism GT/Duette/Indigo PCI/Cardbus (DEPRECATED)'
 	depends on PCI && EXPERIMENTAL && WLAN_80211
 	select WIRELESS_EXT
+	select WEXT_SPY
+	select WEXT_PRIV
 	select FW_LOADER
 	---help---
 	  This enables support for FullMAC PCI/Cardbus prism54 devices. This
@@ -300,6 +314,7 @@ config USB_ZD1201
 	tristate "USB ZD1201 based Wireless device support"
 	depends on USB && WLAN_80211
 	select WIRELESS_EXT
+	select WEXT_PRIV
 	select FW_LOADER
 	---help---
 	  Say Y if you want to use wireless LAN adapters based on the ZyDAS