Set rlimit rtprio for cameraserver

Set rlimit rtprio for cameraserver to allow it to inherit rt priority
via binder priority inheritance.

Bug:  80502612
Test: confirmed rt prio inheritance via systrace
Change-Id: I916370981690126c7c5302699c7c1bf5b6052685
diff --git a/camera/cameraserver/cameraserver.rc b/camera/cameraserver/cameraserver.rc
index fea5a1d..a9aae0b 100644
--- a/camera/cameraserver/cameraserver.rc
+++ b/camera/cameraserver/cameraserver.rc
@@ -4,3 +4,4 @@
     group audio camera input drmrpc
     ioprio rt 4
     writepid /dev/cpuset/camera-daemon/tasks /dev/stune/top-app/tasks
+    rlimit rtprio 10 10