iwlwifi: P2P is not enabled by default

P2P still under development. it will not enabled by default, but user
always can enable it manually for testing.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/Kconfig b/drivers/net/wireless/iwlwifi/Kconfig
index 82c8cca..ae08498 100644
--- a/drivers/net/wireless/iwlwifi/Kconfig
+++ b/drivers/net/wireless/iwlwifi/Kconfig
@@ -111,3 +111,19 @@
 	  NL80211_TESTMODE. This provide the capabilities of enable user space
 	  validation applications to interacts with the device through the
 	  generic netlink message via NL80211_TESTMODE channel.
+
+config IWLWIFI_P2P
+       bool "iwlwifi experimental P2P support"
+       depends on IWLWIFI
+       help
+         This option enables experimental P2P support for some devices
+         based on microcode support. Since P2P support is still under
+         development, this option may even enable it for some devices
+         now that turn out to not support it in the future due to
+         microcode restrictions.
+
+         To determine if your microcode supports the experimental P2P
+         offered by this option, check if the driver advertises AP
+         support when it is loaded.
+
+         Say Y only if you want to experiment with P2P.