Added functions to identify PSP Model

src/kernel/pspsysreg.h

@@ -69,6 +69,12 @@ int sceSysregMeBusClockEnable(void);
   */
 int sceSysregMeBusClockDisable(void);
 
+/**
+ * Get the PSP's Tachyon version.
+ * @param version - A pointer to an int to receive the Tachyon version into
+ */
+int sceSysconGetTachyonVersion( int* version );
+
 /*@}*/
 
 #ifdef __cplusplus