memory_bus: Move related declarations into new `chipdrivers/memory_bus.h`

Change-Id: I2bef65de77860d049ec3d9938ae777c5f929c258
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.sourcearcade.org/c/flashprog/+/438
diff --git a/w29ee011.c b/w29ee011.c
index 31aa84f..6def570 100644
--- a/w29ee011.c
+++ b/w29ee011.c
@@ -16,7 +16,7 @@
 
 #include <string.h>
 #include "flash.h"
-#include "chipdrivers.h"
+#include "chipdrivers/memory_bus.h"
 
 /* According to the Winbond W29EE011, W29EE012, W29C010M, W29C011A
  * datasheets this is the only valid probe function for those chips.