Move slider-sepolicy into gs101-sepolicy

from: 71e609c24c97fc8d44843af30527cbeb90d5dcdf

Bug: 167996145
Change-Id: Ie00e7e0983a3ca695bbd5140c929d07a80144301
diff --git a/private/service_contexts b/private/service_contexts
new file mode 100644
index 0000000..8877518
--- /dev/null
+++ b/private/service_contexts
@@ -0,0 +1 @@
+telephony.oem.oemrilhook        u:object_r:radio_service:s0