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/Random.cpp

@@ -13,7 +13,7 @@
 #elif ARCH(AARCH64)
 #    include <Kernel/Arch/aarch64/ASM_wrapper.h>
 #endif
-#include <Kernel/Devices/RandomDevice.h>
+#include <Kernel/Devices/Generic/RandomDevice.h>
 #include <Kernel/Random.h>
 #include <Kernel/Sections.h>
 #include <Kernel/Time/TimeManagement.h>