kconfig: make local .config default for streamline_config

As Andi Kleen pointed out, most people would expect that the local .config
file to be based for a streamline config. This patch changes the order
of searching for a config file to consider the .config in the local
directory first.

Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>