package/rhash: requires RMD160 support in openssl

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

Fixes:
 - http://autobuild.buildroot.org/results/e3733ad25de55616b2eafff0b489aea2bee65e06

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

package/rhash/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_RHASH
 	bool "rhash"
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_RMD160 if BR2_PACKAGE_LIBOPENSSL
 	help
 	  LibRHash is a professional, portable, thread-safe C library
 	  for computing a wide variety of hash sums, such as CRC32,