NDS32 and SANDBOX architecture were sharing the same IH_ARCH number
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Acked-by: Macpaul Lin <macpaul@andestech.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
 #define IH_ARCH_AVR32          17      /* AVR32        */
 #define IH_ARCH_ST200          18      /* STMicroelectronics ST200  */
 #define IH_ARCH_SANDBOX                19      /* Sandbox architecture (test only) */
-#define IH_ARCH_NDS32          19      /* ANDES Technology - NDS32  */
+#define IH_ARCH_NDS32          20      /* ANDES Technology - NDS32  */
 
 /*
  * Image Types