Fix archive yymm directory

In case there is a "patchlevel" suffix.

Signed-off-by: Alexey Neyman <stilor@att.net>

scripts/functions

@@ -1469,6 +1469,7 @@ CT_Mirrors()
         local base yymm
         base="${version%%-*}"
         yymm="${version##*-??}"
+        yymm="${yymm%%-*}"
         echo "https://releases.linaro.org/components/toolchain/${project}-linaro/${version}"
         echo "https://releases.linaro.org/archive/${yymm}/components/toolchain/${project}-linaro/${base}"
         echo "https://releases.linaro.org/archive/${yymm}/components/toolchain/${project}-linaro"