Kernel: Fix all broken locks from new mutexes

kernel/kernel/Device/DebugDevice.cpp

@@ -20,7 +20,7 @@ namespace Kernel
 	BAN::ErrorOr<size_t> DebugDevice::write_impl(off_t, BAN::ConstByteSpan buffer)
 	{
 		auto ms_since_boot = SystemTimer::get().ms_since_boot();
-		Debug::DebugLock::lock();
+		SpinLockGuard _(Debug::s_debug_lock);
 		BAN::Formatter::print(Debug::putchar, "[{5}.{3}] {}: ",
 			ms_since_boot / 1000,
 			ms_since_boot % 1000,
@@ -28,7 +28,6 @@ namespace Kernel
 		);
 		for (size_t i = 0; i < buffer.size(); i++)
 			Debug::putchar(buffer[i]);
-		Debug::DebugLock::unlock();
 		return buffer.size();
 	}