Fix Build Warnings for AArch64 (#2242)

This commit links to issue (#2234).

When cross-compiling for AArch64, using gcc 13.3, you encounter three
warnings types that turn into errors:

- maybe-uninitialized
- stringop-truncation
- strict-aliasing

This commit fixes all the warnings found, in regards to the first two
rules. To resolve the warnigns due to strict-aliasing, I am editing the
CMake build system.

Signed-off-by: Antonios Christidis <a-christidis@ti.com>

test_conformance/events/test_event_dependencies.cpp

@@ -89,7 +89,7 @@ int test_event_enqueue_wait_for_events_run_test(
 
     // If we are to use two devices, then get them and create a context with
     // both.
-    cl_device_id *two_device_ids;
+    cl_device_id *two_device_ids = nullptr;
     if (two_devices)
     {
         two_device_ids = (cl_device_id *)malloc(sizeof(cl_device_id) * 2);