Fixed missing C file in indtext unit test.

Author: skarg

zephyr/tests/bacnet/indtext/CMakeLists.txt

@@ -26,6 +26,10 @@ if(BOARD STREQUAL unit_testing)
     ${BACNET_SRC_PATH}.c
     ${BACNET_TEST_PATH}/src/main.c
     )
+  get_filename_component(BACNET_SRC ${BACNET_SRC_PATH} PATH)
+  list(APPEND SOURCES
+    ${BACNET_SRC}/bacstr.c
+  )
 
   set(CONF_FILE "${CONF_FILE};prj.unit_testing.conf")
   find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})