package/resiprocate: enable DES in openssl

resiprocate security backend assumes that if openssl is enabled that
it provides DES support. However DES support in openssl has become
optional since  commit a83d418 ("package/libopenssl: add option to
enable some features").

Select openssl DES support in wpa_supplicant Kconfig to avoid build
failures.

Fixes:
http://autobuild.buildroot.net/results/f7def0d5706f9e6ab97accc4eaa5f512a11bcb4c

Signed-off-by: Ryan Barnett <ryan.barnett@collins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/resiprocate/Config.in

@@ -9,6 +9,7 @@ config BR2_PACKAGE_RESIPROCATE
 	depends on BR2_USE_WCHAR
 	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_C_ARES
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_DES if BR2_PACKAGE_LIBOPENSSL
 	help
 	  reSIProcate is a framework that aims to fully implement the
 	  SIP protocol in first class C++. It is intended for use in