abuild changes to allow ignoring dummy directories and injecting architectures.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2128 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/mainboard/motorola/sandpoint/abuild.info

@@ -0,0 +1,3 @@
+# This mainboard directory can't be built without 
+# an extra set of config files.
+TARCH=SKIP

src/mainboard/motorola/sandpointx3_altimus_mpc7410/abuild.info

@@ -0,0 +1,2 @@
+# Target architecture can't be parsed here.
+TARCH=ppc

util/abuild/abuild.sh

@@ -87,7 +87,7 @@ option CROSS_COMPILE="CROSS_PREFIX"
 option HOSTCC="CROSS_HOSTCC"
 
 EOF
-	if [ $TARCH == i386 ] ; then
+	if [ "$TARCH" == i386 ] ; then
 		cat <<EOF
 romimage "normal"
 	option USE_FALLBACK_IMAGE=0
@@ -226,6 +226,9 @@ function build_target
 
 	echo -n "Processing mainboard/$VENDOR/$MAINBOARD"
 	
+	[ -r "$LBROOT/src/mainboard/${VENDOR}/${MAINBOARD}/abuild.info" ] && \
+		source $LBROOT/src/mainboard/${VENDOR}/${MAINBOARD}/abuild.info
+	
 	if [ "$ARCH" == "$TARCH" ]; then
 		echo " ($TARCH: ok)"
 	else