b43legacy: move under broadcom vendor directory

Part of reorganising wireless drivers directory and Kconfig.

Signed-off-by: Kalle Valo <[e-mail]>

MAINTAINERS

···
 L:	[e-mail]
 W:	http://wireless.kernel.org/en/users/Drivers/b43
 S:	Maintained
-F:	drivers/net/wireless/b43legacy/
+F:	drivers/net/wireless/broadcom/b43legacy/
 
 BACKLIGHT CLASS/SUBSYSTEM
 M:	Jingoo Han <[e-mail]>

drivers/net/wireless/Kconfig

···
 	  will be called mwl8k.  If unsure, say N.
 
 source "drivers/net/wireless/ath/Kconfig"
-source "drivers/net/wireless/b43legacy/Kconfig"
 source "drivers/net/wireless/brcm80211/Kconfig"
 source "drivers/net/wireless/hostap/Kconfig"
 source "drivers/net/wireless/ipw2x00/Kconfig"

drivers/net/wireless/Makefile

···
 obj-$(CONFIG_PRISM54)		+= prism54/
 
 obj-$(CONFIG_HOSTAP)		+= hostap/
-obj-$(CONFIG_B43LEGACY)		+= b43legacy/
 obj-$(CONFIG_ZD1211RW)		+= zd1211rw/
 obj-$(CONFIG_WLAN)		+= realtek/
 

drivers/net/wireless/broadcom/Kconfig

···
 if WLAN_VENDOR_BROADCOM
 
 source "drivers/net/wireless/broadcom/b43/Kconfig"
+source "drivers/net/wireless/broadcom/b43legacy/Kconfig"
 
 endif # WLAN_VENDOR_BROADCOM

drivers/net/wireless/broadcom/Makefile

···
 obj-$(CONFIG_B43)		+= b43/
+obj-$(CONFIG_B43LEGACY)		+= b43legacy/