Change in coreboot[master]: soc/intel/fast_spi: Check SPI Cycle In-Progress prior start HW Seq

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Subrata Banik, Caveh Jalali, Paul Menzel, Tim Wawrzynczak, Rizwan Qureshi, Alex Levin, Patrick Rudolph.
Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/61849 )

Change subject: soc/intel/fast_spi: Check SPI Cycle In-Progress prior start HW Seq
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Patch Set 4: Code-Review+2