Kernel list.c Unit Test (#497)

* Test: List.c Unit Test

* Test: test list.h macros

* Test: Fix UT bug

* Remove unecessary statement from Makefile

* Update list_utest.c

* Update list_utest.c

Co-authored-by: Cobus van Eeden <35851496+cobusve@users.noreply.github.com>

FreeRTOS/Test/CMock/list/list.yml

@@ -0,0 +1,32 @@
+:cmock:
+  :mock_prefix: mock_
+  :when_no_prototypes: :warn
+  :treat_externs: :include
+  :enforce_strict_ordering: TRUE
+  :plugins:
+    - :ignore
+    - :ignore_arg
+    - :expect_any_args
+    - :array
+    - :callback
+    - :return_thru_ptr
+  :callback_include_count: true # include a count arg when calling the callback
+  :callback_after_arg_check: false # check arguments before calling the callback
+  :treat_as:
+    uint8:    HEX8
+    uint16:   HEX16
+    uint32:   UINT32
+    int8:     INT8
+    bool:     UINT8
+  :includes:        # This will add these includes to each mock.
+    - <stdbool.h>
+    - "FreeRTOS.h"
+  :treat_externs: :exclude  # Now the extern-ed functions will be mocked.
+  :weak: __attribute__((weak))
+  :verbosity: 3
+  :attributes:
+    - PRIVILEGED_FUNCTION
+  :strippables:
+    - PRIVILEGED_FUNCTION
+    - portDONT_DISCARD
+  :treat_externs: :include