net: wireless: Add CONFIG_ATH6K_LEGACY for QCA AR6003

CONFIG_ATH6K_LEGACY is added to support QCA AR6003 (Non cfg80211).
AR6003 driver needs WIRELESS_EXT support. WIRELESS_EXT is going to
be deprecated so adding it to defconfig will not work. Driver needs
to mark it as dependency.

Change-Id: I09c1f07ea15b8de75c1ed35d4fec6c82265018a9
Acked-by: Prasanth Bhatta <c_bhatta@qca.qualcomm.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index 5c62769..b83e871 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -283,6 +283,14 @@
 	---help---
 	  A driver for Qualcomm WLAN SDIO Libra chipset.
 
+config ATH6K_LEGACY
+	tristate "QCA AR6003 wlan SDIO driver"
+	depends on MMC_MSM && WLAN
+	select WIRELESS_EXT
+	select WEXT_PRIV
+	---help---
+	This module adds support for wireless adapters based on QCA AR6003 chipset running over SDIO.
+
 config WCNSS_CORE
 	tristate "Qualcomm WCNSS CORE driver"
 	depends on ARCH_MSM8960