[coreboot-gerrit] Change in coreboot[master]: soc/amd/common/block/spi/fch_spi_ctrl.c: Fix SPI vendor id code

[Richard Spiegel (Code Review)]

Richard Spiegel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/35589 )

Change subject: soc/amd/common/block/spi/fch_spi_ctrl.c: Fix SPI vendor id code
......................................................................

Patch Set 1:

Fixing code to make it clear and avoid false positive from coverity.