target/espressif: add profiling function for ESP32-S3

Use the TRAX interface DEBUGPC if available.
Otherwise use default stop-and-go profiling.

ESP32-S3, before this patch:
	Internal: 8 samples/second
	FT2232H: 12 samples/second

After this patch:
	Internal: 18ksamples/second
	FT2232H: 100ksamples/second

Change-Id: I681f0bccf4263c1e24f38be511e3b3aec8bf4d60
Signed-off-by: Richard Allen <rsaxvc@rsaxvc.net>
Reviewed-on: https://review.openocd.org/c/openocd/+/8431
Reviewed-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Ian Thompson <ianst@cadence.com>
Reviewed-by: Yurii Shutkin <yurii.shutkin@gmail.com>

src/target/espressif/esp32s3.c

@@ -421,4 +421,5 @@ struct target_type esp32s3_target = {
 	.deinit_target = esp_xtensa_target_deinit,
 
 	.commands = esp32s3_command_handlers,
+	.profiling = esp_xtensa_profiling,
 };