Bonito: Add more vendor_modem_prop

Bug: 140221335

subj=u:r:init:s0 msg='avc: denied { set } for property=persist.vendor.mdm.multisim.cfg pid=940 uid=0 gid=1000 scontext=u:r:modem_svc:s0 tcontext=u:object_r:vendor_default_prop:s0 tclass=property_service permissive=0'

Signed-off-by: SalmaxChang <salmaxchang@google.com>
diff --git a/vendor/google/property_contexts b/vendor/google/property_contexts
index 8571d62..2275cd1 100644
--- a/vendor/google/property_contexts
+++ b/vendor/google/property_contexts
@@ -17,3 +17,5 @@
 
 ro.vendor.build.type                  u:object_r:vendor_build_type_prop:s0
 persist.modem.                        u:object_r:vendor_modem_prop:s0
+persist.vendor.modem.                 u:object_r:vendor_modem_prop:s0
+persist.vendor.mdm.                   u:object_r:vendor_modem_prop:s0