target-s390: Use TCG_CALL_NO_WG for integer helpers

The division routines do not read or write tcg registers,
but can raise fixed-point divide exceptions.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

target-s390x/helper.h

@@ -9,10 +9,10 @@ DEF_HELPER_FLAGS_4(clc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
 DEF_HELPER_3(mvcl, i32, env, i32, i32)
 DEF_HELPER_FLAGS_4(clm, TCG_CALL_NO_WG, i32, env, i32, i32, i64)
 DEF_HELPER_FLAGS_3(mul128, TCG_CALL_NO_RWG, i64, env, i64, i64)
-DEF_HELPER_3(divs32, s64, env, s64, s64)
-DEF_HELPER_3(divu32, i64, env, i64, i64)
-DEF_HELPER_3(divs64, s64, env, s64, s64)
-DEF_HELPER_4(divu64, i64, env, i64, i64, i64)
+DEF_HELPER_FLAGS_3(divs32, TCG_CALL_NO_WG, s64, env, s64, s64)
+DEF_HELPER_FLAGS_3(divu32, TCG_CALL_NO_WG, i64, env, i64, i64)
+DEF_HELPER_FLAGS_3(divs64, TCG_CALL_NO_WG, s64, env, s64, s64)
+DEF_HELPER_FLAGS_4(divu64, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
 DEF_HELPER_4(srst, i64, env, i64, i64, i64)
 DEF_HELPER_4(clst, i64, env, i64, i64, i64)
 DEF_HELPER_4(mvpg, void, env, i64, i64, i64)