iommu/arm-smmu: Print device name in context fault handler

Multiple physical devices may use the same smmu, but use different
context banks. Increase readabilty by printing a human-readable device
name, instead of just the streamid.

arm-smmu da0000.arm,smmu-vfe: translation fault on da0000.arm,smmu-vfe!
arm-smmu da0000.arm,smmu-vfe: PAR = 0x100000203
arm-smmu da0000.arm,smmu-vfe: ATOS failed. Will issue a TLBIALL and try
arm-smmu da0000.arm,smmu-vfe: translation fault on da0000.arm,smmu-vfe!
arm-smmu da0000.arm,smmu-vfe: PAR = 0x100000203
arm-smmu da0000.arm,smmu-vfe: ATOS still failed. If the page tables look
arm-smmu da0000.arm,smmu-vfe: Context Fault for msm_cam_smmu_cb1
arm-smmu da0000.arm,smmu-vfe: Unhandled context fault: iova=0x00000000,

Change-Id: I736657ccb275ab7c343357e842ef61591314252c
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>