package/mender: force libopenssl

mender raises the following build failure with libressl since at least
version 3.1.0 (and probably since the addition of the package):

vendor/github.com/mendersoftware/openssl/conn.go:103:61: could not determine kind of name for C.X509_V_ERR_DANE_NO_MATCH

Fixes:
 - http://autobuild.buildroot.org/results/2b032d2a4e7cfbb20444c13821003120a4d00abd
 - http://autobuild.buildroot.org/results/621c057c0b8b627c8140456a2b0af4f95d239dcc

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 46abbffc9702be320e9d71de71ce89457a28c48e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mender/Config.in

@@ -4,8 +4,9 @@ config BR2_PACKAGE_MENDER
 	depends on BR2_PACKAGE_HOST_GO_TARGET_CGO_LINKING_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_OPENSSL
-	select BR2_PACKAGE_LIBOPENSSL_ENABLE_MD4 if BR2_PACKAGE_LIBOPENSSL
-	select BR2_PACKAGE_LIBOPENSSL_ENABLE_RMD160 if BR2_PACKAGE_LIBOPENSSL
+	select BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_MD4
+	select BR2_PACKAGE_LIBOPENSSL_ENABLE_RMD160
 	help
 	  Mender is an open source over-the-air (OTA) software updater
 	  for embedded Linux devices. Mender comprises a client