iwlegacy: move under intel directory

Part of reorganising wireless drivers directory and Kconfig.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/Kconfig

@@ -163,7 +163,6 @@ config MWL8K
 source "drivers/net/wireless/ath/Kconfig"
 source "drivers/net/wireless/hostap/Kconfig"
 source "drivers/net/wireless/iwlwifi/Kconfig"
-source "drivers/net/wireless/iwlegacy/Kconfig"
 source "drivers/net/wireless/libertas/Kconfig"
 source "drivers/net/wireless/orinoco/Kconfig"
 source "drivers/net/wireless/p54/Kconfig"