cxl/pci: Fixup devm_cxl_iomap_block() to take a 'struct device *'

cxl/pci: Fixup devm_cxl_iomap_block() to take a 'struct device *'

The expectation is that devm functions take 'struct device *' and pci
functions take 'struct pci_dev *'. Swap out the @pdev argument for @dev
and fixup related helpers.

Cc: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/162216592374.3833641.13281743585064451514.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>