gpuservice: allow cmd gpu vkjson in interactive shell

Bug: 122860343
Test: adb shell, then 'cmd gpu vkjson'
Change-Id: I2720d1bbc27152f416cd7e61f4dcccb4a13c7b82
diff --git a/private/gpuservice.te b/private/gpuservice.te
index 5e8aab5..c8f3def 100644
--- a/private/gpuservice.te
+++ b/private/gpuservice.te
@@ -28,6 +28,9 @@
 # Use socket supplied by adbd, for cmd gpu vkjson etc.
 allow gpuservice adbd:unix_stream_socket { read write getattr };
 
+# Needed for interactive shell
+allow gpuservice devpts:chr_file { read write getattr };
+
 add_service(gpuservice, gpu_service)
 
 # Only uncomment below line when in development