Allow vendor_init to set its own nice value

Bug: 173537947
Test: Boot
Change-Id: Ibbd31c6dfb34b87044d95cac3dae5d4696cb964a
diff --git a/public/vendor_init.te b/public/vendor_init.te
index 16dca64..8d436b9 100644
--- a/public/vendor_init.te
+++ b/public/vendor_init.te
@@ -214,6 +214,9 @@
 # Get file context
 allow vendor_init file_contexts_file:file r_file_perms;
 
+# Allow vendor_init to (re)set nice
+allow vendor_init self:capability sys_nice;
+
 set_prop(vendor_init, apk_verity_prop)
 set_prop(vendor_init, bluetooth_a2dp_offload_prop)
 set_prop(vendor_init, bluetooth_audio_hal_prop)