Relocate PS2 code (#14895)

* Relocate ps2 protocol code

* clang

* Move makefile logic

drivers/ps2/ps2_io.h

@@ -0,0 +1,11 @@
+#pragma once
+
+void clock_init(void);
+void clock_lo(void);
+void clock_hi(void);
+bool clock_in(void);
+
+void data_init(void);
+void data_lo(void);
+void data_hi(void);
+bool data_in(void);