batman-adv: Drop "experimental" from BATMAN_V Kconfig

The Kconfig option BATMAN_ADV_BATMAN_V is now enabled by default when the
BATMAN_ADV is enabled. A feature which is enabled by default for a module
should not be considered experimental.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

net/batman-adv/Kconfig

@@ -33,7 +33,7 @@ config BATMAN_ADV
           tools.
 
 config BATMAN_ADV_BATMAN_V
-	bool "B.A.T.M.A.N. V protocol (experimental)"
+	bool "B.A.T.M.A.N. V protocol"
 	depends on BATMAN_ADV && !(CFG80211=m && BATMAN_ADV=y)
 	default y
 	help