x86/pci/probe_roms: Add missing __iomem annotation to pci_map_biosrom()

Stay in sync with the declaration and fix the corresponding
sparse warnings.

Signed-off-by: Mathias Krause <[e-mail]>
Cc: Dan Williams <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/kernel/probe_roms.c

···
 	return oprom;
 }
 
-void *pci_map_biosrom(struct pci_dev *pdev)
+void __iomem *pci_map_biosrom(struct pci_dev *pdev)
 {
 	struct resource *oprom = find_oprom(pdev);