cmake/zephyr: unify cmake rules for src/probe

Adding all source files in a single, giant zephyr/CMakeLists.txt is
inconvenient and does not scale.

Modify Zephyr rules to use definitions in src/probe/ instead.

Link: #8260
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

src/probe/CMakeLists.txt

@@ -1,3 +1,8 @@
 # SPDX-License-Identifier: BSD-3-Clause
 
-add_local_sources(sof probe.c)
+if(CONFIG_PROBE STREQUAL "m")
+  add_subdirectory(llext ${PROJECT_BINARY_DIR}/probe_llext)
+  add_dependencies(app probe)
+elseif(CONFIG_PROBE)
+  add_local_sources(sof probe.c)
+endif()

zephyr/CMakeLists.txt

@@ -210,6 +210,7 @@ add_subdirectory(../src/ipc/  ipc_unused_install/)
 add_subdirectory(../src/lib/ lib_unused_install/)
 add_subdirectory(../src/library_manager/ library_manager_unused_install/)
 add_subdirectory(../src/logging/ logging_unused_install/)
+add_subdirectory(../src/probe/ probes_unused_install/)
 add_subdirectory(../src/samples/ samples_unused_install/)
 add_subdirectory(../src/schedule/  schedule_unused_install/)
 add_subdirectory(../src/trace/ trace_unused_install/)
@@ -481,14 +482,6 @@ zephyr_library_sources_ifdef(CONFIG_FAST_GET lib/fast-get.c)
 
 # Optional SOF sources - depends on Kconfig - WIP
 
-if(CONFIG_PROBE STREQUAL "m")
-	add_subdirectory(${SOF_SRC_PATH}/probe/llext
-			 ${PROJECT_BINARY_DIR}/probe_llext)
-	add_dependencies(app probe)
-elseif(CONFIG_PROBE)
-	zephyr_library_sources(${SOF_SRC_PATH}/probe/probe.c)
-endif()
-
 zephyr_library_sources_ifdef(CONFIG_MULTICORE
 	${SOF_SRC_PATH}/idc/idc.c
 )