ASoC: Fix warning with make xmldocs caused by soc-devres.c

This patch fix warning while "make xmldocs".

Warning(.//sound/soc/soc-devres.c:70): No description
 found for parameter 'platform_drv'
Warning(.//sound/soc/soc-devres.c:70): Excess function
 parameter 'platform' description in 'devm_snd_soc_register_platform'
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-devres.c

@@ -60,7 +60,7 @@ static void devm_platform_release(struct device *dev, void *res)
 /**
  * devm_snd_soc_register_platform - resource managed platform registration
  * @dev: Device used to manage platform
- * @platform: platform to register
+ * @platform_drv: platform to register
  *
  * Register a platform driver with automatic unregistration when the device is
  * unregistered.