soundwire: intel: fix another unused-function warning

Without CONFIG_PM, there is another warning about an unused function:

drivers/soundwire/intel.c:530:12: error: 'intel_link_power_down' defined but not used [-Werror=unused-function]

After a previous fix, the driver already uses both an #ifdef and
a __maybe_unused annotation but still gets it wrong. Remove the
ifdef and instead use __maybe_unused consistently to avoid the
problem for good.

Fixes: f046b233 ("soundwire: intel: fix intel_suspend/resume defined but not used warning")
Fixes: ebf878ed ("soundwire: intel: add pm_runtime support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20201203230502.1480063-1-arnd@kernel.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/soundwire/intel.c

@@ -1585,8 +1585,6 @@ int intel_master_process_wakeen_event(struct platform_device *pdev)
  * PM calls
  */
 
-#ifdef CONFIG_PM
-
 static int __maybe_unused intel_suspend(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
@@ -1641,7 +1639,7 @@ static int __maybe_unused intel_suspend(struct device *dev)
 	return 0;
 }
 
-static int intel_suspend_runtime(struct device *dev)
+static int __maybe_unused intel_suspend_runtime(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
 	struct sdw_intel *sdw = cdns_to_intel(cdns);
@@ -1796,7 +1794,7 @@ static int __maybe_unused intel_resume(struct device *dev)
 	return ret;
 }
 
-static int intel_resume_runtime(struct device *dev)
+static int __maybe_unused intel_resume_runtime(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
 	struct sdw_intel *sdw = cdns_to_intel(cdns);
@@ -1969,8 +1967,6 @@ static int intel_resume_runtime(struct device *dev)
 	return ret;
 }
 
-#endif
-
 static const struct dev_pm_ops intel_pm = {
 	SET_SYSTEM_SLEEP_PM_OPS(intel_suspend, intel_resume)
 	SET_RUNTIME_PM_OPS(intel_suspend_runtime, intel_resume_runtime, NULL)