Add rule for platform_compat service

Bug: 137769727
Test: m
Change-Id: Ib6160a82597198f4a120592293f90ffe1ffb123b
diff --git a/private/service_contexts b/private/service_contexts
index 49bdb29..0216e57 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -32,6 +32,7 @@
 clipboard                                 u:object_r:clipboard_service:s0
 com.android.net.IProxyService             u:object_r:IProxyService_service:s0
 companiondevice                           u:object_r:companion_device_service:s0
+platform_compat                           u:object_r:platform_compat_service:s0
 connectivity                              u:object_r:connectivity_service:s0
 connmetrics                               u:object_r:connmetrics_service:s0
 consumer_ir                               u:object_r:consumer_ir_service:s0