tci: Fix build breakage (unresolved symbol tcg_out_tb_finalize)

Commit 32761257 enabled
qemu_ld/st optimization unconditionally for some hosts.

The TCG interpreter still does not support this kind of
optimization. Therefore builds with TCI fail with an
unresolved symbol tcg_out_tb_finalize. This is fixed here.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

configure

@@ -3891,7 +3891,10 @@ upper() {
 
 case "$cpu" in
   i386|x86_64|ppc)
-    echo "CONFIG_QEMU_LDST_OPTIMIZATION=y" >> $config_target_mak
+    # The TCG interpreter currently does not support ld/st optimization.
+    if test "$tcg_interpreter" = "no" ; then
+        echo "CONFIG_QEMU_LDST_OPTIMIZATION=y" >> $config_target_mak
+    fi
   ;;
 esac