cpu/intel: Fix brace issues detected by checkpatch.pl

Fix the following error and warning detected by checkpatch.pl:

ERROR: that open brace { should be on the previous line
WARNING: braces {} are not necessary for single statement blocks

TEST=Build and run on Galileo Gen2

Change-Id: Icdd6bd9ae578589b4d42002d200fa8f83920265e
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18849
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/cpu/intel/speedstep/acpi.c

@@ -33,9 +33,8 @@ static int determine_total_number_of_cores(void)
 			(cpu->bus->dev->path.type != DEVICE_PATH_CPU_CLUSTER)) {
 			continue;
 		}
-		if (!cpu->enabled) {
+		if (!cpu->enabled)
 			continue;
-		}
 		count++;
 	}
 	return count;