Change in flashrom[master]: dummyflasher: add SR2 and SR3 emulation harness

[Thomas Heijligen (Code Review)]

Attention is currently required from: Nico Huber, Angel Pons, Anastasia Klimchuk, Sergii Dmytruk.
Thomas Heijligen has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/59072 )

Change subject: dummyflasher: add SR2 and SR3 emulation harness
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Patch Set 34:

(1 comment)

File dummyflasher.c:

https://review.coreboot.org/c/flashrom/+/59072/comment/8fd98740_25459198 
PS34, Line 169: assert
> Just wanted to check whether everyone is fine with `assert` in the code? It is not often used in fla […]

`assert` is used only once in flashrom beside the tests. I would prefer not to use it. But I don't think we have a rule for it.
How about:
    #define STATUS1_RO_BITMASK SPI_SW_WIP
    #define STATUS2_RO_BITMASK 0
    #define STATUS3_RO_BITMASK 0
or
    const uint8_t status1_ro_bitmask = SPI_SW_WIP;
    const uint8_t status2_ro_bitmask = 0;
    const uint8_t status3_ro_bitmask = 0;
?

Where is the benefit from a function over this?