iommu/arm-smmu-v3: Change *array into *const array

Fix checkpatch warning in arm-smmu-v3.c:
static const char * array should probably be static const char * const
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

@@ -352,7 +352,7 @@ static void arm_smmu_cmdq_build_sync_cmd(u64 *cmd, struct arm_smmu_device *smmu,
 
 static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu)
 {
-	static const char *cerror_str[] = {
+	static const char * const cerror_str[] = {
 		[CMDQ_ERR_CERROR_NONE_IDX]	= "No error",
 		[CMDQ_ERR_CERROR_ILL_IDX]	= "Illegal command",
 		[CMDQ_ERR_CERROR_ABT_IDX]	= "Abort on command fetch",