Expose max.active.modem to be vendor inittable.

And rename it properly.

Bug: 154072245
Test: manual
Change-Id: I85b060ef90a747b43e1ab386337ffc5b49d29e57
Merged-In: I85b060ef90a747b43e1ab386337ffc5b49d29e57
diff --git a/prebuilts/api/30.0/public/property_contexts b/prebuilts/api/30.0/public/property_contexts
index 5abe85b..7bd1b72 100644
--- a/prebuilts/api/30.0/public/property_contexts
+++ b/prebuilts/api/30.0/public/property_contexts
@@ -184,6 +184,7 @@
 sys.usb.ffs.mtp.ready u:object_r:exported_ffs_prop:s0 exact bool
 sys.usb.state u:object_r:exported2_system_prop:s0 exact string
 telephony.lteOnCdmaDevice u:object_r:exported3_default_prop:s0 exact int
+telephony.active_modems.max_count u:object_r:exported3_default_prop:s0 exact int
 tombstoned.max_tombstone_count u:object_r:exported3_default_prop:s0 exact int
 vold.post_fs_data_done u:object_r:exported2_vold_prop:s0 exact int
 vts.native_server.on u:object_r:exported3_default_prop:s0 exact bool
diff --git a/public/property_contexts b/public/property_contexts
index 5abe85b..7bd1b72 100644
--- a/public/property_contexts
+++ b/public/property_contexts
@@ -184,6 +184,7 @@
 sys.usb.ffs.mtp.ready u:object_r:exported_ffs_prop:s0 exact bool
 sys.usb.state u:object_r:exported2_system_prop:s0 exact string
 telephony.lteOnCdmaDevice u:object_r:exported3_default_prop:s0 exact int
+telephony.active_modems.max_count u:object_r:exported3_default_prop:s0 exact int
 tombstoned.max_tombstone_count u:object_r:exported3_default_prop:s0 exact int
 vold.post_fs_data_done u:object_r:exported2_vold_prop:s0 exact int
 vts.native_server.on u:object_r:exported3_default_prop:s0 exact bool