[IA64-SGI] cleanup shubio.h

This patch cleans up include/asm/sn/shubio.h by removing a ton of
whitespaces and running it through Lindent, reducing it's size by almost
30KB. No actual content has been changed.

Signed-off-by: Jes Sorensen <jes@wildopensource.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>