update carousel icon for nexus one dev phone

Change-Id: I7f92063a7dc6b49dd6bb044b79931dbc9268ebd6
diff --git a/tools/droiddoc/templates/assets/images/home/devphone-small.png b/tools/droiddoc/templates/assets/images/home/devphone-small.png
old mode 100755
new mode 100644
index b8487f5..e10bfa9
--- a/tools/droiddoc/templates/assets/images/home/devphone-small.png
+++ b/tools/droiddoc/templates/assets/images/home/devphone-small.png
Binary files differ