gpu_probe: add init.rc for service

Adds the init.rc for the gpu_probe service.
This service registers gpu probes with perfetto, and then lies dormant
until summoned by perfetto to begin GPU conuter collection.

Bug: 267669418
Test: install target and see it run correctly.
Change-Id: Ib6fcbcc8f46b47140839d25cb923deed7fc4c9d4
diff --git a/gpu_probe/Android.bp b/gpu_probe/Android.bp
index dbce711..370014c 100644
--- a/gpu_probe/Android.bp
+++ b/gpu_probe/Android.bp
@@ -29,4 +29,5 @@
   ],
   shared_libs: ["libdl"],
   vendor: true,
+  init_rc: [ "gpu_probe.rc" ],
 }