iommu/arm-smmu-v3: Remove useless of_match_ptr()

The CONFIG option controlling this driver, ARM_SMMU_V3,
depends on ARM64, which select's OF.

So, CONFIG_OF is always defined when building this driver.
of_match_ptr(arm_smmu_of_match) is the same as arm_smmu_of_match.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NWill Deacon <will@kernel.org>

drivers/iommu/arm-smmu-v3.c

@@ -3722,7 +3722,7 @@ MODULE_DEVICE_TABLE(of, arm_smmu_of_match);
 static struct platform_driver arm_smmu_driver = {
 	.driver	= {
 		.name			= "arm-smmu-v3",
-		.of_match_table		= of_match_ptr(arm_smmu_of_match),
+		.of_match_table		= arm_smmu_of_match,
 		.suppress_bind_attrs	= true,
 	},
 	.probe	= arm_smmu_device_probe,