iommu/arm-smmu: replace devm_request_and_ioremap by devm_ioremap_resource

Use devm_ioremap_resource instead of devm_request_and_ioremap.

This was partly done using the semantic patch
scripts/coccinelle/api/devm_ioremap_resource.cocci

The error-handling code on the call to platform_get_resource was removed
manually, and the initialization of smmu->size was manually moved lower, to
take advantage of the NULL test on res performed by devm_ioremap_resource.

Change-Id: I5c4af20eb0b7abfee753311706e4419567b13e30
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Git-commit: 8a7f431221602fcde573dfdba26de1990ec195a0
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>