Change in flashrom[master]: ichspi: Split very long init function into two

[Anastasia Klimchuk (Code Review)]

Attention is currently required from:  Felix Singer, Nico Huber, Edward O'Callaghan, Angel Pons, Nikolai Artemiev.
Hello build bot (Jenkins), Nico Huber, Edward O'Callaghan, Angel Pons, Nikolai Artemiev,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/flashrom/+/58735

to look at the new patch set (#3).

Change subject: ichspi: Split very long init function into two
......................................................................

ichspi: Split very long init function into two

ich_init_spi is very long, but logically it can be split. Init
function detects the chipset and then the rest of operations depends
on the chipset.

Init function is more readable now, it consists of only a switch.

Initialisation of hwseq and swseq that used to happen in the
beginning of init function now moved to init_ich_default, because
hwseq and swseq are only used for chipsets served by init_ich_default.

BUG=b:204488958
TEST=1) probe-read-verify-erase section-write-reboot
on Intel octopus board with GD25LQ128C/GD25LQ128D/GD25LQ128E
2) probe and read on Panther Point (7 series PCH)

Change-Id: I6789bc456a4878e6555831ae0b80ecbdbf62938b
Signed-off-by: Anastasia Klimchuk 
---
M ichspi.c
1 file changed, 268 insertions(+), 255 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/35/58735/3