staging: silicom: 80 character and tab formatting in libbp_sd.h

Fixes 80+ character limit warnings from checkpatch.pl
Changes aesthetics of spaces and tabs where appropriate.

Signed-off-by: Jade Bilkey <herself@thefumon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>