target-ppc: Fix vcmpbfp. Unordered Case

Fix the implementation of Vector Compare Bounds Single Precision.
Specifically, fix the case where the operands are unordered -- since
the result is non-zero, the CR[6] field should be set to zero.
Signed-off-by: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

target-ppc/int_helper.c

@@ -708,7 +708,7 @@ static inline void vcmpbfp_internal(CPUPPCState *env, ppc_avr_t *r,
         int le_rel = float32_compare_quiet(a->f[i], b->f[i], &env->vec_status);
         if (le_rel == float_relation_unordered) {
             r->u32[i] = 0xc0000000;
-            /* ALL_IN does not need to be updated here.  */
+            all_in = 1;
         } else {
             float32 bneg = float32_chs(b->f[i]);
             int ge_rel = float32_compare_quiet(a->f[i], bneg, &env->vec_status);