iwlwifi: hide kernel option IWLWIFI_DEVICE_SVTOOL

Because the testmode support should be the mandatory foundation
of test functionality, it is better to set kernel option
IWLWIFI_DEVICE_SVTOOL automatically instead of user configuration.
Signed-off-by: Kenny Hsu <kenny.hsu@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/Kconfig

@@ -103,9 +103,9 @@ config IWLWIFI_DEVICE_TRACING
 endmenu
 
 config IWLWIFI_DEVICE_SVTOOL
-	bool "iwlwifi device svtool support"
+	def_bool y
 	depends on IWLWIFI
-	select NL80211_TESTMODE
+	depends on NL80211_TESTMODE
 	help
 	  This option enables the svtool support for iwlwifi device through
 	  NL80211_TESTMODE. svtool is a software validation tool that runs in