sb/intel/i82801jx: Hook up spi code

Change-Id: Ie83c800a0bcd12fa501c91a1c2b1ee756de9d732
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/21675
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/southbridge/intel/i82801jx/Kconfig

@@ -18,6 +18,7 @@ config SOUTHBRIDGE_INTEL_I82801JX
 	bool
 	select SOUTHBRIDGE_INTEL_COMMON
 	select SOUTHBRIDGE_INTEL_COMMON_SMBUS
+	select SOUTHBRIDGE_INTEL_COMMON_SPI
 	select IOAPIC
 	select HAVE_USBDEBUG
 	select HAVE_HARD_RESET