add ObjSpim back for .0 files (little-endian mips).

Reference: /n/sources/patch/applied/mach.h-spim
Date: Fri Mar 31 05:06:46 CES 2006
Signed-off-by: geoff@collyer.net

--- /sys/include/mach.h	Fri Mar 31 05:06:36 2006
+++ /sys/include/mach.h	Fri Mar 31 05:06:33 2006
@@ -92,6 +92,7 @@
 	ObjAlpha,		/* .7 */
 	ObjSparc64,		/* .u */
 	ObjAmd64,		/* .6 */
+	ObjSpim,		/* .0 */
 	Maxobjtype,
 
 	CNONE  = 0,		/* symbol table classes */