We'd like to get a uImage when just using 'make' on many targets.  After
some discussion, it made sense to simply add uImage to the default targets
since it adds minimal build overhead and will work on all platforms.  Also,
fix a dependency in the boot stuff.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>