coreinfo: Use the ESC key to exit the payload

Enable the ESC key to close coreinfo - useful if you are using a chooser
and want to return to it.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Myles Watson <mylesgw@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3340 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/coreinfo/coreinfo.c

@@ -256,6 +256,8 @@ static void loop(void)
 			}
 		}
 
+		if (key == 0x1B)
+			return;
 
 		handle_category_key(&categories[curwin], key);
 	}