ASoC: sof: add missing pm debug

Type is not part of debugging parse code. Add it so unknown types don't
show up while debugging

Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>

Author: cujomalainey

sound/soc/sof/ipc.c

@@ -106,6 +106,8 @@ static void ipc_log_header(struct device *dev, u8 *text, u32 cmd)
 			str2 = "CLK_REQ"; break;
 		case SOF_IPC_PM_CORE_ENABLE:
 			str2 = "CORE_ENABLE"; break;
+		case SOF_IPC_PM_GATE:
+			str2 = "GATE"; break;
 		default:
 			str2 = "unknown type"; break;
 		}