Kernel: Fix E1000 interrupt handling condition

I had written the ICR register check backwards which lead to interrupt
handling only when it was not needed, and no handling when it was
needed. This somehow still worked, just much slower often requiring tcp
resends from the server.

kernel/kernel/Networking/E1000/E1000.cpp

@@ -290,7 +290,7 @@ namespace Kernel
 
 	void E1000::handle_irq()
 	{
-		if (read32(REG_ICR) & ICR_RxQ0)
+		if (!(read32(REG_ICR) & ICR_RxQ0))
 			return;
 
 		SpinLockGuard _(m_lock);