This reverts commit fc15bfb6.

This patch caused a regression for tricore-softmmu,
./tests/tcg/tricore-softmmu/test_boot_to_main.c.tst.

Reported-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>