package/libressl: fix openssldir setting to match openssl

libressl defaults to $prefix/etc/ssl for its "openssldir" setting, E.G.
the location where configuration files and certificates are searched:

openssl version -d
OPENSSLDIR: "/usr/etc/ssl"

Change it to /etc/ssl so it matches openssl and the expectations of packages
dealing with certificates (ca-certificates, libcurl, p11-kit)

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libressl/libressl.mk

@@ -10,6 +10,7 @@ LIBRESSL_LICENSE = ISC (new additions), OpenSSL or SSLeay (original OpenSSL code
 LIBRESSL_LICENSE_FILES = COPYING
 LIBRESSL_CPE_ID_VENDOR = openbsd
 LIBRESSL_INSTALL_STAGING = YES
+LIBRESSL_CONF_OPTS = -DOPENSSLDIR="/etc/ssl"
 
 ifeq ($(BR2_PACKAGE_LIBRESSL_BIN),)
 define LIBRESSL_REMOVE_BIN