iommu/arm-smmu: fix decimal printf format specifiers prefixed with 0x

The prefix suggests the number should be printed in hex, so use
the %x specifier to do that.

Found by using regex suggested by Joe Perches.
Signed-off-by: NHans Wennborg <hans@hanshq.net>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

drivers/iommu/arm-smmu.c

@@ -634,7 +634,7 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev)
 
 	if (fsr & FSR_IGN)
 		dev_err_ratelimited(smmu->dev,
-				    "Unexpected context fault (fsr 0x%u)\n",
+				    "Unexpected context fault (fsr 0x%x)\n",
 				    fsr);
 
 	fsynr = readl_relaxed(cb_base + ARM_SMMU_CB_FSYNR0);