systemd: resolved was renamed to resolve in meson build

While the conversion to meson, this seems to be missed.
Found while trying to build systemd with uClibc toolchain.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/systemd/systemd.mk

@@ -287,10 +287,10 @@ SYSTEMD_CONF_OPTS += -Dnetworkd=false
 endif
 
 ifeq ($(BR2_PACKAGE_SYSTEMD_RESOLVED),y)
-SYSTEMD_CONF_OPTS += -Dresolved=true
+SYSTEMD_CONF_OPTS += -Dresolve=true
 SYSTEMD_RESOLVED_USER = systemd-resolve -1 systemd-resolve -1 * - - - Network Name Resolution Manager
 else
-SYSTEMD_CONF_OPTS += -Dresolved=false
+SYSTEMD_CONF_OPTS += -Dresolve=false
 endif
 
 ifeq ($(BR2_PACKAGE_SYSTEMD_TIMESYNCD),y)