Extract error codes

include/blisp.h

@@ -3,20 +3,8 @@
 #define _LIBBLISP_H
 
 #include <stdint.h>
-
 #include "blisp_chip.h"
-
-enum blisp_return {
-  BLISP_OK = 0,
-  BLISP_ERR_UNKNOWN = -1,
-  BLISP_ERR_NO_RESPONSE = -2,
-  BLISP_ERR_DEVICE_NOT_FOUND = -3,
-  BLISP_ERR_CANT_OPEN_DEVICE = -4,
-  // Can't auto-find device due it doesn't have native USB
-  BLISP_ERR_NO_AUTO_FIND_AVAILABLE = -5,
-  BLISP_ERR_PENDING = -6,
-  BLISP_ERR_CHIP_ERR = -7
-};
+#include "error_codes.h"
 
 struct blisp_segment_header {
   uint32_t dest_addr;