soundwire: intel: add prototype for WAKEEN interrupt processing

In ClockStop mode, the PCI device will be notified of a wake, which
will be handled from an interrupt thread.
Signed-off-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191212014507.28050-10-pierre-louis.bossart@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

include/linux/soundwire/sdw_intel.h

@@ -122,6 +122,8 @@ struct sdw_intel_res {
 int sdw_intel_acpi_scan(acpi_handle *parent_handle,
 			struct sdw_intel_acpi_info *info);
 
+void sdw_intel_process_wakeen_event(struct sdw_intel_ctx *ctx);
+
 struct sdw_intel_ctx *
 sdw_intel_probe(struct sdw_intel_res *res);