Let qti_init_shell access qmuxd sockets

This is needed to read the bluetooth address.

FPIIM-431

Change-Id: If131f5aa8f01491cfb2fc8cb1c95c44ad0356a6b
diff --git a/common/init_shell.te b/common/init_shell.te
index 5319a7e..66049d7 100644
--- a/common/init_shell.te
+++ b/common/init_shell.te
@@ -166,3 +166,5 @@
 # usf
 allow qti_init_shell usf_device:chr_file getattr;
 allow qti_init_shell usf_device:chr_file setattr;
+
+qmux_socket(qti_init_shell);