frv: switch to GENERIC_PCI_IOMAP

frv uses a version of pci_iomap that simply
casts and returns back the start address.
Looking closely, both ioremap and ioport_map seem to
do this on this platform, so the generic pci_iomap
will DTRT automatically.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index bad27a6..dfde78b 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -317,6 +317,7 @@
 	bool "Use PCI"
 	depends on MB93090_MB00
 	default y
+	select GENERIC_PCI_IOMAP
 	help
 	  Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
 	  onboard. If you have one of these boards and you wish to use the PCI