Grant app and hal access to telephony_config_prop

To resolve regression.

Bug: 158254452
Test: m selinux_policy
Change-Id: If0db9b9a4af6c34a007d0549aa7a5dd465e4ed63
diff --git a/private/app.te b/private/app.te
index 4da06bc..3dff8fe 100644
--- a/private/app.te
+++ b/private/app.te
@@ -6,6 +6,7 @@
 get_prop(appdomain, dalvik_config_prop)
 get_prop(appdomain, surfaceflinger_color_prop)
 get_prop(appdomain, systemsound_config_prop)
+get_prop(appdomain, telephony_config_prop)
 get_prop(appdomain, userspace_reboot_config_prop)
 get_prop(appdomain, vold_config_prop)