fix: allow execution of clinfo on ARM64

While this code builds on ARM64, it cannot execute properly because
__rdtsc() is only available on x86. clinfo returns no platform which
gives the incorrect impression that KMD or UMD is not available. A
better fix is still needed but at least clinfo runs.

Signed-off-by: Francois Dugast <francois.dugast@intel.com>

shared/source/utilities/cpuintrinsics.cpp

@@ -76,7 +76,11 @@ void umonitor(void *a) {
 }
 
 uint64_t rdtsc() {
+#if defined(__ARM_ARCH)
+    return 0;
+#else
     return __rdtsc();
+#endif
 }
 
 } // namespace CpuIntrinsics