fat_io_lib finally works, implement virtual partition devices, manage devices via string keys

libkb/kb.c

@@ -1,12 +1,12 @@
+#include <devices.h>
 #include <kb.h>
-#include <kb_device.h>
 #include <status.h>
 #include <stdint.h>
 #include <system.h>
 
 int kb_read_key (void) {
   char ch = 0;
-  int r = device_do (KB_DEVICE, KB_READ_KEY, &ch, NULL, NULL, NULL);
+  int r = device_do ("KB", KB_READ_KEY, &ch, NULL, NULL, NULL);
 
   if (r == ST_OK)
     return (int)ch;

libkb/kb.h

@@ -1,7 +1,7 @@
 #ifndef _LIBKB_KB_H
 #define _LIBKB_KB_H
 
-#include <kb_device.h>
+#include <devices.h>
 #include <stdint.h>
 
 /* \brief Read key from keyboard