omap: Checkpatch cleanup for blizzard.h

arch/arm/plat-omap/include/plat/blizzard.h:9:
ERROR: spaces prohibited around that ':' (ctx:WxW)

Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>