Kernel: Require lock rank for Spinlock construction

All users which relied on the default constructor use a None lock rank
for now. This will make it easier to in the future remove LockRank and
actually annotate the ranks by searching for None.

Kernel/Graphics/Console/BootFramebufferConsole.h

@@ -42,7 +42,7 @@ protected:
     OwnPtr<Memory::Region> m_framebuffer;
 #endif
     u8* m_framebuffer_data {};
-    mutable Spinlock m_lock;
+    mutable Spinlock m_lock { LockRank::None };
 };
 
 }