ASoC: intel: Cleanup useless ACPI inclusion.

The sst-haswell-dsp.c is an ACPI independent file, this patch removes
ACPI header files for it.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/intel/sst-haswell-dsp.c

@@ -28,9 +28,6 @@
 #include <linux/firmware.h>
 #include <linux/pm_runtime.h>
 
-#include <linux/acpi.h>
-#include <acpi/acpi_bus.h>
-
 #include "sst-dsp.h"
 #include "sst-dsp-priv.h"
 #include "sst-haswell-ipc.h"