iommu/arm-smmu: Refactor qcom_smmu structure to include single pointer

qcom_smmu_match_data is static and constant so refactor qcom_smmu to
store single pointer to qcom_smmu_match_data instead of replicating
multiple child members of the same and handle the further dereferences
in the places that want them.

Suggested-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Bibek Kumar Patro <quic_bibekkum@quicinc.com>
Link: https://lore.kernel.org/r/20241212151402.159102-3-quic_bibekkum@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>

Author: bibekpatro

drivers/iommu/arm/arm-smmu/arm-smmu-qcom-debug.c

@@ -73,7 +73,7 @@ void qcom_smmu_tlb_sync_debug(struct arm_smmu_device *smmu)
 	if (__ratelimit(&rs)) {
 		dev_err(smmu->dev, "TLB sync timed out -- SMMU may be deadlocked\n");
 
-		cfg = qsmmu->cfg;
+		cfg = qsmmu->data->cfg;
 		if (!cfg)
 			return;
 

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

@@ -507,7 +507,7 @@ static struct arm_smmu_device *qcom_smmu_create(struct arm_smmu_device *smmu,
 		return ERR_PTR(-ENOMEM);
 
 	qsmmu->smmu.impl = impl;
-	qsmmu->cfg = data->cfg;
+	qsmmu->data = data;
 
 	return &qsmmu->smmu;
 }

drivers/iommu/arm/arm-smmu/arm-smmu-qcom.h

@@ -8,7 +8,7 @@
 
 struct qcom_smmu {
 	struct arm_smmu_device smmu;
-	const struct qcom_smmu_config *cfg;
+	const struct qcom_smmu_match_data *data;
 	bool bypass_quirk;
 	u8 bypass_cbndx;
 	u32 stall_enabled;