soundwire: intel: update headers for interrupts

The existing use of 6 handlers is problematic in MSI mode. Update
headers so that all shared interrupts can be handled with a single
handler.
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191212014507.28050-8-pierre-louis.bossart@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

include/linux/soundwire/sdw_intel.h

@@ -4,6 +4,8 @@
 #ifndef __SDW_INTEL_H
 #define __SDW_INTEL_H
 
+#include <linux/irqreturn.h>
+
 /**
  * struct sdw_intel_stream_params_data: configuration passed during
  * the @params_stream callback, e.g. for interaction with DSP
@@ -127,4 +129,6 @@ void sdw_intel_exit(struct sdw_intel_ctx *ctx);
 
 void sdw_intel_enable_irq(void __iomem *mmio_base, bool enable);
 
+irqreturn_t sdw_intel_thread(int irq, void *dev_id);
+
 #endif