Sepolicy for dynamic_android_service

Dynamic_android service is a proxy running in SystemServer to the
gsi_service daemon. It provides a set of SystemApi's to manage
installation of a new system image to the device while keeping the
original system image intact.

Bug: 122929007
Test: manual; see dynamic_android service start in logcat
Change-Id: Idb9b0475677dad13b7864ca0cf6041dcab04b4e3
diff --git a/private/service_contexts b/private/service_contexts
index 82abfbc..965304c 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -57,6 +57,7 @@
 drm.drmManager                            u:object_r:drmserver_service:s0
 dropbox                                   u:object_r:dropbox_service:s0
 dumpstate                                 u:object_r:dumpstate_service:s0
+dynamic_android                           u:object_r:dynamic_android_service:s0
 econtroller                               u:object_r:radio_service:s0
 euicc_card_controller                     u:object_r:radio_service:s0
 external_vibrator_service                 u:object_r:external_vibrator_service:s0