defconfig: Enable RSN on IBSS networks (wpa_supplicant)

Fedora and Debian enable this. NetworkManager actually rejects such
configurations citing kernel bugs, but that actually might not be the
right thing to do anymore.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>

wpa_supplicant/defconfig

@@ -576,7 +576,7 @@ CONFIG_WIFI_DISPLAY=y
 # Support RSN on IBSS networks
 # This is needed to be able to use mode=1 network profile with proto=RSN and
 # key_mgmt=WPA-PSK (i.e., full key management instead of WPA-None).
-#CONFIG_IBSS_RSN=y
+CONFIG_IBSS_RSN=y
 
 # External PMKSA cache control
 # This can be used to enable control interface commands that allow the current