Kernel: Move a bunch of generic devices code into new subdirectory

Author: https://github.com/supercomputer7
Commit: 4617c05a08
Pull-request: https://github.com/SerenityOS/serenity/pull/17909
Reviewed-by: https://github.com/Panky-codes ✅
Reviewed-by: https://github.com/gmta ✅

Kernel/Net/TCPSocket.cpp

@@ -7,7 +7,7 @@
 #include <AK/Singleton.h>
 #include <AK/Time.h>
 #include <Kernel/Debug.h>
-#include <Kernel/Devices/RandomDevice.h>
+#include <Kernel/Devices/Generic/RandomDevice.h>
 #include <Kernel/FileSystem/OpenFileDescription.h>
 #include <Kernel/Locking/MutexProtected.h>
 #include <Kernel/Net/EthernetFrameHeader.h>