kern: implement thread pinning/SvcSynchronizePreemptionState

libraries/libmesosphere/source/arch/arm64/kern_k_interrupt_manager.cpp

@@ -180,7 +180,7 @@ namespace ams::kern::arch::arm64 {
                 KScopedSchedulerLock sl;
 
                 /* Pin the current thread. */
-                GetCurrentProcess().PinCurrentThread();
+                KScheduler::PinCurrentThread(GetCurrentProcessPointer());
 
                 /* Set the interrupt flag for the thread. */
                 GetCurrentThread().SetInterruptFlag();