cameraserver: move cameraserver to the camera-daemon cpuset

cameraserver should be running in the camera-daemon cpuset, as it may
have different requirements than the foreground cpuset.

Change-Id: I1d201521a58a470497f762abd105609acf5fc02f
diff --git a/camera/cameraserver/cameraserver.rc b/camera/cameraserver/cameraserver.rc
index 09f9789..c11a02a 100644
--- a/camera/cameraserver/cameraserver.rc
+++ b/camera/cameraserver/cameraserver.rc
@@ -3,4 +3,4 @@
     user cameraserver
     group audio camera input drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    writepid /dev/cpuset/camera-daemon/tasks