[XL] Change in flashrom[master]: tree/: Convert flashchip read func ptr to enumerate

[Felix Singer (Code Review)]

Attention is currently required from: Edward O'Callaghan, Anastasia Klimchuk.

Felix Singer has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/66788 )

Change subject: tree/: Convert flashchip read func ptr to enumerate
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Patch Set 15: Code-Review+2

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/66788/comment/82d26f1c_7eaf7bf5 
PS15, Line 14: Squash in,
             : flashchips.c: convert edi_chip_read()
             : flashchips.c: convert spi_chip_read()
             : flashchips.c: convert read_opaque()
             : flashchips.c: convert read_memmapped()
             : flashchips.c: convert spi_read_at45db_e8()
             : flashchips.c: convert spi_read_at45db()
             : flashchips.c: convert NULL cases
Not needed anymore