[coreboot-gerrit] Change in coreboot[master]: soc/intel/cmn/fast-spi: Add flash as reserved region

[Arthur Heymans (Code Review)]

Attention is currently required from: Nico Huber, Subrata Banik, Paul Menzel, Werner Zeh.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/64077 )

Change subject: soc/intel/cmn/fast-spi: Add flash as reserved region
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Patch Set 2:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/64077/comment/b1f6560e_9e4f4c46 
PS2, Line 528: mmio_resource(dev, 0, FLASH_BASE_ADDR / KiB, CONFIG_ROM_SIZE / KiB);
Always use 16M or can it decode something else than the BIOS in that region?