sb/intel/common/spi: Add Baytrail/Braswell support

The mechanism for getting the SPIBAR is little different.

Tested on Intel Minnowboard Turbot.

Change-Id: Ib14f185eab8bf708ad82b06c7a7ce586744318fd
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36342
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/soc/intel/broadwell/Kconfig b/src/soc/intel/broadwell/Kconfig
index 07bcf22..21c9b6f 100644
--- a/src/soc/intel/broadwell/Kconfig
+++ b/src/soc/intel/broadwell/Kconfig
@@ -20,7 +20,7 @@
 	select HAVE_SMI_HANDLER
 	select SOUTHBRIDGE_INTEL_COMMON_RESET
 	select SOUTHBRIDGE_INTEL_COMMON_RTC
-	select SOUTHBRIDGE_INTEL_COMMON_SPI
+	select SOUTHBRIDGE_INTEL_COMMON_SPI_ICH9
 	select HAVE_USBDEBUG
 	select IOAPIC
 	select REG_SCRIPT