gcc: improved case statement in gcc.conf for setting '-with-{arch,cpu,tune}' configure option

base/gcc/gcc.conf

@@ -18,9 +18,7 @@
 if [ "${ver:0:3}" = "4.4" ]; then
   for x in $GCC_WRAPPER_INSERT $GCC_WRAPPER_APPEND; do
     case "$x" in
-      -march=*)       var_append confopt " " "${x/-m/--with-}" ;;
+      -march=*|-mcpu=*|-mtune=*) var_append confopt " " "${x/-m/--with-}" ;;
-      -mcpu=*)        var_append confopt " " "${x/-m/--with-}" ;;
-      -mtune=*)       var_append confopt " " "${x/-m/--with-}" ;;
     esac
   done
 fi