schedule: add a dependency for LL stats on kernel mode LL thread

The load tracking for Low-Latency tasks depends on low-overhead
access to cycle counter (e.g. CCOUNT on xtensa), which is not
currently available from user-space tasks. Add a dependency to
ensure the LL stats can only be enabled if LL tasks are run in
kernel mode.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

src/schedule/Kconfig

@@ -15,6 +15,7 @@ config SCHEDULE_DMA_MULTI_CHANNEL
 config SCHEDULE_LL_STATS_LOG
 	bool "Log low-latency scheduler statistics"
 	default y
+	depends on !SOF_USERSPACE_LL
 	help
 	  Log statistics from low-latency scheduler. This is a low overhead
 	  mechanism to gather average and worst-case execution times of