Staging: vt6656: Ensure power.c uses proper tabbing.

Cleanup power.c to use proper tabbing as per coding standards.
Signed-off-by: Philip Worrall <philip.worrall@googlemail.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>