compile dmi and cpuid by default

Reference: /n/atom/patch/applied/cpuidmk
Date: Sun Mar 23 13:59:02 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/aux/mkfile	Sun Mar 23 13:58:59 2014
+++ /sys/src/cmd/aux/mkfile	Sun Mar 23 13:59:00 2014
@@ -52,12 +52,17 @@
 
 </sys/src/cmd/mkmany
 
-DIRS=mnihongo\
+ARCHDIRS=`{if(~ $objtype amd64 386) echo cpuid}
+
+DIRS=\
+	dmi\
+	mnihongo\
 	flashfs\
 	gps\
 	na\
 	realemu\
-	vga
+	vga\
+	$ARCHDIRS\
 
 all:V:	$DIRS