Add rules for lpdump and lpdumpd

- lpdump is a binary on the device that talks to lpdumpd
  via binder.

- lpdumpd is a daemon on the device that actually reads
  dynamic partition metadata. Only lpdump can talk to it.

Bug: 126233777
Test: boots (sanity)
Test: lpdump

Change-Id: I0e21f35ac136bcbb0603940364e8117f2d6ac438
diff --git a/private/shell.te b/private/shell.te
index 0d1cf03..02b01f5 100644
--- a/private/shell.te
+++ b/private/shell.te
@@ -70,3 +70,7 @@
 # Renderscript host side tests depend on being able to execute
 # /system/bin/bcc (b/126388046)
 allow shell rs_exec:file rx_file_perms;
+
+# Allow shell to start and comminicate with lpdumpd.
+set_prop(shell, lpdumpd_prop);
+binder_call(shell, lpdumpd)