target/arm: Add M profile secure MMU index values to get_a32_user_mem_index()

Add the M profile secure MMU index values to the switch in
get_a32_user_mem_index() so that LDRT/STRT work correctly
rather than asserting at translate time.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Message-id: 1507556919-24992-2-git-send-email-peter.maydell@linaro.org

target/arm/translate.c

@@ -165,6 +165,10 @@ static inline int get_a32_user_mem_index(DisasContext *s)
     case ARMMMUIdx_MPriv:
     case ARMMMUIdx_MNegPri:
         return arm_to_core_mmu_idx(ARMMMUIdx_MUser);
+    case ARMMMUIdx_MSUser:
+    case ARMMMUIdx_MSPriv:
+    case ARMMMUIdx_MSNegPri:
+        return arm_to_core_mmu_idx(ARMMMUIdx_MSUser);
     case ARMMMUIdx_S2NS:
     default:
         g_assert_not_reached();