package/botan: requires RC4 and RMD160 support in openssl

Enable RC4 and RMD160 in openssl to fix build failure raised since
commit a83d41867c8d69a77d5cd0a665aa216af5340359

Fixes:
 - http://autobuild.buildroot.org/results/795671a39b754747725b09cf0e196defd6b0e59a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/botan/Config.in

@@ -20,6 +20,8 @@ config BR2_PACKAGE_BOTAN
 	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::future
 	select BR2_PACKAGE_BOOST_FILESYSTEM if BR2_PACKAGE_BOOST
 	select BR2_PACKAGE_BOOST_SYSTEM if BR2_PACKAGE_BOOST
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_RC4 if BR2_PACKAGE_LIBOPENSSL
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_RMD160 if BR2_PACKAGE_LIBOPENSSL
 	help
 	  Botan is a crypto library for C++