Make MPC8641's PCI/PCI-E driver a common driver for many FSL parts.

All of the PCI/PCI-Express driver and initialization code that
was in the MPC8641HPCN port has now been moved into the common
drivers/fsl_pci_init.c.  In a subsequent patch, this will be
utilized by the 85xx ports as well.

Common PCI-E IMMAP register blocks for FSL 85xx/86xx are added.

Also enable the second PCI-Express controller on 8641
by getting its BATS and CFG_ setup right.

Fixed a u16 vendor compiler warning in AHCI driver too.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/drivers/ahci.c b/drivers/ahci.c
index 8ceff00..ccd4d71 100644
--- a/drivers/ahci.c
+++ b/drivers/ahci.c
@@ -253,7 +253,8 @@
 
 static int ahci_init_one(pci_dev_t pdev)
 {
-	u32 iobase, vendor;
+	u32 iobase;
+	u16 vendor;
 	int rc;
 
 	memset((void *)ataid, 0, sizeof(hd_driveid_t *) * AHCI_MAX_PORTS);