Change in coreboot[master]: soc/intel/common: Prevent SMI storm when setting SPI WPD bit

[Angel Pons (Code Review)]

Attention is currently required from: Nico Huber, Patrick Rudolph, Benjamin Doron, Tim Wawrzynczak.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50754 )

Change subject: soc/intel/common: Prevent SMI storm when setting SPI WPD bit
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Patch Set 5:

(1 comment)

File src/soc/intel/common/block/fast_spi/fast_spi.c:

https://review.coreboot.org/c/coreboot/+/50754/comment/8964d7cf_ccc232ca 
PS3, Line 393: SPI_BIOS_CONTROL
> How would this happen?

I don't follow...

https://imgur.com/0kN3KNJ.png

https://github.com/tianocore/edk2-platforms/blob/master/Silicon/Intel/Coffee...