Fix tether for some Qualcomm devices [selinux part]

Fixes https://github.com/phhusson/treble_experimentations/issues/131
diff --git a/sepolicy/qualcomm.te b/sepolicy/qualcomm.te
index edde901..9baaa56 100644
--- a/sepolicy/qualcomm.te
+++ b/sepolicy/qualcomm.te
@@ -9,3 +9,8 @@
 #Pixel 2
 type vnd_qcrilhook_hwservice, hwservice_manager_type;
 allow system_app vnd_qcrilhook_hwservice:hwservice_manager { find };
+
+# cf https://github.com/phhusson/treble_experimentations/issues/131
+# SELinux : avc:  denied  { add } for interface=android.hardware.tetheroffload.control::IOffloadControl pid=15220 scontext=u:r:ipacm:s0 tcontext=u:object_r:hal_tetheroffload_hwservice:s0 tclass=hwservice_manager permissive=0
+type ipacm, hwservice_manager_type;
+allow ipacm hal_tetheroffload_hwservice:hwservice_manager { add };