debug: add an overlay enabling Zephyr's kernel tracing

This commit adds an overlay enabling kernel traces from
Zephyr.
Those traces may be read on the host side from memory window

Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>

app/ctf_kernel_traces_overlay.conf

@@ -0,0 +1,9 @@
+# enable traces from Zephyr kernel
+
+CONFIG_TRACING_BACKEND_ADSP_MEMORY_WINDOW=y
+CONFIG_TRACING_ASYNC=n
+CONFIG_TRACING_SYNC=y
+CONFIG_TRACING=y
+CONFIG_TRACING_CTF=y
+CONFIG_THREAD_NAME=y
+CONFIG_DEBUG_THREAD_INFO=y