Misc: Swap LIKELY/UNLIKELY macros for attributes

src/common/threading.cpp

@@ -484,7 +484,7 @@ u64 Threading::GetThreadTicksPerSecond()
   // On x86, despite what the MS documentation says, this basically appears to be rdtsc.
   // So, the frequency is our base clock speed (and stable regardless of power management).
   static u64 frequency = 0;
-  if (UNLIKELY(frequency == 0))
+  if (frequency == 0) [[unlikely]]
   {
     frequency = 1000000;