sepolicy: Add entry for uwb apex

Bug: 188911079
Test: Compiles
Change-Id: Icc4886d608e75e348ad9de0f249b23602d84694a
diff --git a/apex/com.android.uwb-file_contexts b/apex/com.android.uwb-file_contexts
new file mode 100644
index 0000000..f6b21da
--- /dev/null
+++ b/apex/com.android.uwb-file_contexts
@@ -0,0 +1,2 @@
+(/.*)?                u:object_r:system_file:s0
+/lib(64)?(/.*)        u:object_r:system_lib_file:s0