SPI: re-init SMM SPI driver after lockdown

If the driver is initialized before the lockdown then it will
fail to work after the lockdown bit is set.

Change-Id: Idc05d33d8d726bf29cb3c9b1b4604522bd64170a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1745
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/southbridge/intel/bd82x6x/finalize.c

@@ -22,6 +22,7 @@
 #include <arch/romcc_io.h>
 #include <northbridge/intel/sandybridge/pcie_config.c>
 #include "pch.h"
+#include "spi.h"
 
 void intel_pch_finalize_smm(void)
 {
@@ -34,6 +35,11 @@ void intel_pch_finalize_smm(void)
 	/* Lock SPIBAR */
 	RCBA32_OR(0x3804, (1 << 15));
 
+#if CONFIG_SPI_FLASH_SMM
+	/* Re-init SPI driver to handle locked BAR */
+	spi_init();
+#endif
+
 	/* TCLOCKDN: TC Lockdown */
 	RCBA32_OR(0x0050, (1 << 31));