Patch from John Lenz

Adds support for the Sharp Zaurus SL-5600
Add the ability to compile any collection of poodle and
corgi support under the PXA_SHARPSL option.
arch/arm/boot/compressed/head-sharpsl.S already has code
to detect the poodle machine.

Signed-off-by: John Lenz
Signed-off-by: Russell King