Change in flashrom[master]: flashchips.c: big erase blocksize first

[Simon Buhrow (Code Review)]

Attention is currently required from: Nico Huber.
Simon Buhrow has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58467 )

Change subject: flashchips.c: big erase blocksize first
......................................................................

Patch Set 1:

(1 comment)

Patchset:

PS1: 
Just a starting point for discussion.

I used the following comands:
time sudo flashrom -p ft2232_spi:type=2232H,port=A -E -VV
and
time sudo flashrom -p ft2232_spi:type=2232H,port=A -w write_64Mb_flash.bin -VV

In the first case the order modification does save more than 2 minutes. In the second case it saved 2 seconds (the .bin file has only the first word different from a erased flash).

Just let me know if this setup covers in a satisfying way the range of scenarios. If needed I can upload the flashrom output.