staging: rtl8192e: Add missing entry CFG80211 in Kconfig

Add missing entry CFG80211 in Kconfig to ensure that CFG80211 is
available when selecting hardware rtl8192e.

Fixes: d88b46ce ("staging: rtl8192e: Add cfg80211.h and remove defined variables")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306180620.Ew55XtKJ-lkp@intel.com/Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20230618194454.GA10653@matrix-ESPRIMO-P710Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/Kconfig

@@ -3,6 +3,7 @@ config RTL8192E
 	tristate "RealTek RTL8192E Wireless LAN NIC driver"
 	depends on PCI && WLAN && RTLLIB
 	depends on m
+	select CFG80211
 	select WIRELESS_EXT
 	select WEXT_PRIV
 	select CRYPTO