contrib: ssh2: explicitely depend on gcrypt

OpenSSL is the default if both exist

(cherry picked from commit ae5f50c8eef0288c423657b21fa1f1b425aa6d86)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

contrib/src/ssh2/rules.mak

@@ -24,6 +24,6 @@ DEPS_ssh2 = gcrypt $(DEPS_gcrypt)
 
 .ssh2: ssh2
 	$(RECONF)
-	cd $< && $(HOSTVARS) ./configure $(HOSTCONF) --disable-examples-build
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF) --disable-examples-build --with-libgcrypt --without-openssl
 	cd $< && $(MAKE) install
 	touch $@