make: allow multiple stable pull here too

Mk/defaults.mk

@@ -46,11 +46,13 @@ VERSIONBIN=	${LOCALBASE}/sbin/opnsense-version
 
 .if exists(${VERSIONBIN})
 _PLUGIN_ABI!=	${VERSIONBIN} -a
-PLUGIN_ABI?=	${_PLUGIN_ABI}
+PLUGIN_ABIS?=	${_PLUGIN_ABI}
 .else
-PLUGIN_ABI?=	25.7
+PLUGIN_ABIS?=	25.7
 .endif
 
+PLUGIN_ABI?=	${PLUGIN_ABIS:[1]}
+
 PLUGIN_MAINS=	master main
 PLUGIN_MAIN?=	${PLUGIN_MAINS:[1]}
 PLUGIN_STABLE?=	stable/${PLUGIN_ABI}

Mk/git.mk

@@ -23,6 +23,8 @@
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 
+CORE_ABI=	${PLUGIN_ABI}
+CORE_ABIS=	${PLUGIN_ABIS}
 CORE_MAIN=	${PLUGIN_MAIN}
 CORE_MAINS=	${PLUGIN_MAINS}
 CORE_STABLE=	${PLUGIN_STABLE}