Add contexts for exported telephony props

To remove bad context names, two contexts are added.

- telephony_config_prop
- telephony_status_prop

exported_radio_prop, exported2_radio_prop are removed. Cleaning up
exported3_radio_prop will be a follow-up task.

Exempt-From-Owner-Approval: cherry-pick

Bug: 152471138
Bug: 155844385
Test: boot and see no denials
Test: usim works on blueline
Change-Id: Iff9a4635c709f3ebe266cd811df3a1b4d3a242c2
Merged-In: Iff9a4635c709f3ebe266cd811df3a1b4d3a242c2
(cherry picked from commit 4d36eae8affaffce00063d37fe7f1d570cca1f1f)
diff --git a/private/compat/27.0/27.0.ignore.cil b/private/compat/27.0/27.0.ignore.cil
index 42b1ef0..9605e34 100644
--- a/private/compat/27.0/27.0.ignore.cil
+++ b/private/compat/27.0/27.0.ignore.cil
@@ -174,6 +174,8 @@
     system_lmk_prop
     system_update_service
     systemsound_config_prop
+    telephony_config_prop
+    telephony_status_prop
     test_boot_reason_prop
     time_prop
     timedetector_service