soc: apple: rtkit: Add tracekit endpoint

This commit adds recognition to the Apple RTKit driver
for the TraceKit endpoint, found in the Multi-Touch
Processor (MTP), Always-On Processor (AOP), and potentially
other coprocessors. Without it, warning messages may
occur when communicating with these processors.

Signed-off-by: Sasha Finkelstein <[email protected]>
Signed-off-by: Michael Reeves <[email protected]>

Author: WhatAmISupposedToPutHere

drivers/soc/apple/rtkit.c

@@ -22,6 +22,7 @@ enum {
 	APPLE_RTKIT_EP_DEBUG = 3,
 	APPLE_RTKIT_EP_IOREPORT = 4,
 	APPLE_RTKIT_EP_OSLOG = 8,
+	APPLE_RTKIT_EP_TRACEKIT = 0xa,
 };
 
 #define APPLE_RTKIT_MGMT_TYPE GENMASK_ULL(59, 52)
@@ -191,6 +192,7 @@ static void apple_rtkit_management_rx_epmap(struct apple_rtkit *rtk, u64 msg)
 		case APPLE_RTKIT_EP_DEBUG:
 		case APPLE_RTKIT_EP_IOREPORT:
 		case APPLE_RTKIT_EP_OSLOG:
+		case APPLE_RTKIT_EP_TRACEKIT:
 			dev_dbg(rtk->dev,
 				"RTKit: Starting system endpoint 0x%02x\n", ep);
 			apple_rtkit_start_ep(rtk, ep);