broadwell: Preparations for building

Updated Intel Broadwell for differences in the source based on
the chromium tree. It is missing most of the recent updates
on coreboot.org.

- makefile changes for Elog and IDF tool
- kconfig changes for ME, ucode, and other updates
- update oprom flag
- update timestamp mechanism
- cbfs payload function is now generic

Change-Id: I82bd0792e9dcf81085246873164de6600528d6fe
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7939
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

src/soc/intel/broadwell/chip.c

@@ -33,7 +33,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources   = &pci_domain_read_resources,
 	.set_resources    = &pci_domain_set_resources,
 	.scan_bus         = &pci_domain_scan_bus,
-	.ops_pci_bus      = &pci_ops_mmconf,
+	.ops_pci_bus      = &pci_bus_default_ops,
 };
 
 static struct device_operations cpu_bus_ops = {