sh: add init member to pci_channel data

This patch adds an init callback to struct pci_channel and makes sure
it is initialized properly. Code is added to call this init function
from pcibios_init(). Return values are adjusted and a warning is is
printed if init fails.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/drivers/pci/pci-sh5.c

@@ -27,6 +27,12 @@
 unsigned long pcicr_virt;
 unsigned long PCI_IO_AREA;
 
+int __init sh5_pci_init(struct pci_channel *chan)
+{
+	pr_debug("PCI: Starting intialization.\n");
+	return pcibios_init_platform();
+}
+
 /* Rounds a number UP to the nearest power of two. Used for
  * sizing the PCI window.
  */