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/jedec.c b/jedec.c
index f3dfdd0..7c8434f 100644
--- a/jedec.c
+++ b/jedec.c
@@ -20,7 +20,7 @@
  */
 
 #include "flash.h"
-#include "chipdrivers.h"
+#include "chipdrivers/memory_bus.h"
 
 #define MAX_REFLASH_TRIES 0x10
 #define MASK_FULL 0xffff