arm920 is arm4, not arm5

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1694 42af7a65-404d-4744-a932-0658087f49c3

configs/mx1ads/ostest/Make.defs

@@ -55,7 +55,7 @@ else
 endif
 
 ifeq ($(ARCHCCMAJOR),4)
-  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
+  ARCHCPUFLAGS		= -mtune=arm9tdmi -march=armv4t -msoft-float -fno-builtin
 else
   ARCHCPUFLAGS		= -mapcs-32 -mtune=arm9tdmi -march=armv5te -msoft-float -fno-builtin
 endif