haswell: more ULT/LP support and minor tweaks

- Add ME device ID for Lynxpoint LP
- Add GPU device IDs for ULT
- SATA init tweaks from checking against DXE reference code
- Remove the ICH7 from the SPI driver so it works on all lynxpoint
without having to add more LPC device ID checks
- Add function disable for audio dsp and xhci, remove PCI bridge
- Add interrupt route registers for new devices (needs romstage setup)

Change-Id: Idb48f50d0bacb6bf90531c3834542b9abb54fb8a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/2680
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/southbridge/intel/lynxpoint/me_9.x.c b/src/southbridge/intel/lynxpoint/me_9.x.c
index f2e928a..63b5205 100644
--- a/src/southbridge/intel/lynxpoint/me_9.x.c
+++ b/src/southbridge/intel/lynxpoint/me_9.x.c
@@ -754,10 +754,16 @@
 	.ops_pci		= &pci_ops,
 };
 
+static const unsigned short pci_device_ids[] = {
+	0x8c3a, /* Mobile */
+	0x9c3a, /* Low Power */
+	0
+};
+
 static const struct pci_driver intel_me __pci_driver = {
 	.ops	= &device_ops,
 	.vendor	= PCI_VENDOR_ID_INTEL,
-	.device	= 0x8c3a,
+	.devices= pci_device_ids,
 };
 
 /******************************************************************************