Add support for loading the kernel at a physical offset.  The
offset should still be 4M aligned.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>

Code Aurora Forum (CAF) is becoming a part of Linux Foundation Labs.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>

Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Linas Vepstas <linas@codeaurora.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>