iwlegacy: move under intel directory

Part of reorganising wireless drivers directory and Kconfig.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/net/wireless/intel/Kconfig b/drivers/net/wireless/intel/Kconfig
index 3f8eacc..0a7cd61 100644
--- a/drivers/net/wireless/intel/Kconfig
+++ b/drivers/net/wireless/intel/Kconfig
@@ -12,5 +12,6 @@
 if WLAN_VENDOR_INTEL
 
 source "drivers/net/wireless/intel/ipw2x00/Kconfig"
+source "drivers/net/wireless/intel/iwlegacy/Kconfig"
 
 endif # WLAN_VENDOR_INTEL