configure: Add support for Tilera processors

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

configure

@@ -1077,6 +1077,8 @@ ARCH_LIST='
     sh4
     sparc
     sparc64
+    tilegx
+    tilepro
     tomi
     x86
     x86_32
@@ -2520,6 +2522,9 @@ case "$arch" in
         arch="sparc"
         subarch="sparc64"
     ;;
+    tilegx|tile-gx)
+        arch="tilegx"
+    ;;
     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
         arch="x86"
     ;;