Staging: hv: fix up formatting issues in utils.h

--------  cut here and print out and paste on wall --------

			Tabs, not spaces

--------  cut here and print out and paste on wall --------

Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>