Kernel: add NullDevice to /dev/null

kernel/kernel/Device/NullDevice.cpp

@@ -0,0 +1,15 @@
+#include <kernel/Device/NullDevice.h>
+#include <kernel/FS/DevFS/FileSystem.h>
+
+namespace Kernel
+{
+
+	BAN::ErrorOr<BAN::RefPtr<NullDevice>> NullDevice::create(mode_t mode, uid_t uid, gid_t gid)
+	{
+		auto* result = new NullDevice(mode, uid, gid, DevFileSystem::get().get_next_rdev());
+		if (result == nullptr)
+			return BAN::Error::from_errno(ENOMEM);
+		return BAN::RefPtr<NullDevice>::adopt(result);
+	}
+
+}