Allocate CPU Architecture Code for STMicroelectronics' ST200.

Signed-off-by: Sean McGoogan <Sean.McGoogan@st.com>
---------------------------------------------------

include/image.h

@@ -77,6 +77,7 @@
 #define IH_CPU_NIOS2		15	/* Nios-II	*/
 #define IH_CPU_BLACKFIN		16	/* Blackfin	*/
 #define IH_CPU_AVR32		17	/* AVR32	*/
+#define IH_CPU_ST200	        18	/* STMicroelectronics ST200  */
 
 /*
  * Image Types