sb/ti/pci{1x2x,i7420,xx12}: Get rid of device_t

Use of device_t has been abandoned in ramstage.

Change-Id: I37c6db65be4477dabb6064c3cc7ea1c63e467d19
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26397
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/southbridge/ti/pci1x2x/pci1x2x.c b/src/southbridge/ti/pci1x2x/pci1x2x.c
index 883f00f..e670a43 100644
--- a/src/southbridge/ti/pci1x2x/pci1x2x.c
+++ b/src/southbridge/ti/pci1x2x/pci1x2x.c
@@ -39,7 +39,8 @@
 	pci_write_config8(dev, 0x92, pci_read_config8(dev, 0x92) | 0x02);
 }
 
-static void ti_pci1x2y_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+static void ti_pci1x2y_set_subsystem(struct device *dev, unsigned vendor,
+				     unsigned device)
 {
 	/*
 	 * Enable change sub-vendor ID. Clear the bit 5 to enable to write