goldfish: fix radio selinux violation

[   40.438645] type=1400 audit(1568267883.051:10): avc: denied { read } for comm="DcHandlerThread" name="u:object_r:net_radio0_prop:s0" dev="tmpfs" ino=6773 scontext=u:r:radio:s0 tcontext=u:object_r:net_radio0_prop:s0 tclass=file permissive=0

BUG: 140878138
Change-Id: If117b213eaf3f25d045b8f0884a0b528645f27d8
diff --git a/sepolicy/common/radio.te b/sepolicy/common/radio.te
index 742d3b2..38faf6f 100644
--- a/sepolicy/common/radio.te
+++ b/sepolicy/common/radio.te
@@ -1,3 +1,4 @@
 # Allow the radio to read these properties, they only have an SELinux label in
 # the emulator.
 get_prop(radio, net_eth0_prop);
+allow radio net_radio0_prop:file { getattr read open map };