Update description for Radstone PME 68-12 system

Author: peterzieba

examples/Host/PSOS/IMG.CFG

@@ -5,7 +5,7 @@
 # https://cowlark.com/fluxengine
 
 # These settings might be useful for anyone attempting to work with:
-# A Motorola 68000 VME based system, specifically:
+# A Radstone PME 68-12 VME based Motorola 68000 system, specifically:
 #  * Containing a WD1772 controller
 #  * running the PSOS RTOS from Software Components Group (SCG)