Rename machines from imx...gif to seco-mx... pattern.

setup-environment

@@ -30,7 +30,7 @@ SUPPORTED_MACHINES="$(find sources/*/conf/machine -name "*.conf" \
 DEFAULT_MACHINE="$(echo "$SUPPORTED_MACHINES" | head -n 1)"
 
 GF_ARCHS=($(find sources/meta-seconorth*/conf/machine -name "*.conf" \
-                    -exec basename -s ".conf" {} \; | grep -Eo '^imx[0-9]+' \
+                    -exec basename -s ".conf" {} \; | grep -Eo '^seco-mx[0-9]+' \
                     | sort -u))
 
 DEFAULT_ARCH="${GF_ARCHS[1]}"