soc/intel/cannonlake: Set platform Debug Probe Type

Add option for user to select what kind of probe can be used for
platform debug.

TEST=Set to XDP and boot up system with XDP hooked, able to halt.

Change-Id: Ib6add93e3f1c8a646aa625a4cea9be0acecc0487
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/21942
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/cannonlake/chip.h

@@ -212,6 +212,15 @@ struct soc_intel_cannonlake_config {
 	 */
 	uint32_t PrmrrSize;
 	uint8_t PmTimerDisabled;
+	/* Desired platform debug type. */
+	enum {
+		DebugConsent_Disabled,
+		DebugConsent_DCI_DBC,
+		DebugConsent_DCI,
+		DebugConsent_USB3_DBC,
+		DebugConsent_XDP, /* XDP/Mipi60 */
+		DebugConsent_USB2_DBC,
+	} DebugConsent;
 	/*
 	 * SerialIO device mode selection:
 	 *