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=Check that the following scenarios still behave properly:
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)
3) on machine with ich7 chipset, output from probe and read is
the same between master and this patch

Change-Id: I6789bc456a4878e6555831ae0b80ecbdbf62938b
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: Nico Huber <nico.h@gmx.de>
Tested-by: Nicholas Chin <nic.c3.14@gmail.com>
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/58735
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions