target-arm: make VMSAv7 remapping and AP dependent on V6K

The VMSAv7 remapping and access permissions were introduced in ARMv6K
and not ARMv7.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target-arm/helper.c

@@ -948,7 +948,7 @@ static inline int check_ap(CPUState *env, int ap, int domain, int access_type,
   case 6:
       return prot_ro;
   case 7:
-      if (!arm_feature (env, ARM_FEATURE_V7))
+      if (!arm_feature (env, ARM_FEATURE_V6K))
           return 0;
       return prot_ro;
   default: