package/socat: support OpenSSL only

socat is not compatible with libressl since version 1.7.4.4 which
includes upstream commit 15e38be2f52 ("Fixed SIGSEGV of OpenSSL on
exit()").

Fixes:
http://autobuild.buildroot.net/results/6f0204004c52f762d6e3cb3064238d7eb3646038/

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/socat/socat.mk

@@ -31,7 +31,7 @@ SOCAT_DEPENDENCIES = host-autoconf
 # incompatibile license (GPL-3.0+)
 SOCAT_CONF_OPTS = --disable-readline
 
-ifeq ($(BR2_PACKAGE_OPENSSL):$(BR2_STATIC_LIBS),y:)
+ifeq ($(BR2_PACKAGE_LIBOPENSSL):$(BR2_STATIC_LIBS),y:)
 SOCAT_DEPENDENCIES += openssl
 else
 SOCAT_CONF_OPTS += --disable-openssl