cinterion: allow '*' in Prov/Cfg response

E.g. in a Cinterion PLS8-E (REVISION 04.004) to match the following
line:

  ^SCFG: "MEopMode/Prov/Cfg","fallback*"

Fix suggested by Jan Mazura.

See https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/347

plugins/cinterion/tests/test-modem-helpers-cinterion.c

@@ -1636,6 +1636,11 @@ static const ProvcfgResponseTest provcfg_response_tests[] = {
         .str          = "* ^SCFG: \"MEopMode/Prov/Cfg\",\"tmode\"",
         .modem_family = MM_CINTERION_MODEM_FAMILY_DEFAULT,
         .expected_cid = 2,
+    },
+    {
+        .str          = "* ^SCFG: \"MEopMode/Prov/Cfg\",\"fallback*\"",
+        .modem_family = MM_CINTERION_MODEM_FAMILY_DEFAULT,
+        .expected_cid = 1,
     }
 };