package/cups: add openssl optional dependency

openssl is an optional dependency since bump to version 2.4.2 in commit
433fd541eaa37db3241eed16df6ae1f51d81335b and
https://github.com/OpenPrinting/cups/commit/3e9f2c04d620cccf2a09c43791ed9d8bb717c9da

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit f2c76fbbfcb5b6bc86b2f9b9bc7a6c890068f61a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/cups/cups.mk

@@ -54,8 +54,11 @@ CUPS_CONF_OPTS += --disable-dbus
 endif
 
 ifeq ($(BR2_PACKAGE_GNUTLS),y)
-CUPS_CONF_OPTS += --with-tls=yes
+CUPS_CONF_OPTS += --with-tls=gnutls
 CUPS_DEPENDENCIES += gnutls
+else ifeq ($(BR2_PACKAGE_OPENSSL),y)
+CUPS_CONF_OPTS += --with-tls=openssl
+CUPS_DEPENDENCIES += openssl
 else
 CUPS_CONF_OPTS += --with-tls=no
 endif