ichspi.c: Read chip ID and use it to populate `flash->chip`

Read the flash chip vendor/device ID using hardware sequencing, find the
corresponding flashchip entry, and copy it over to `flash->chip`.

Identifying the chip was not previously required as ICH hardware
sequencing handles chip-level details related to read/write/erase ops.

However writeprotect operations require the chip entry to be identified
so that chip->reg_bits can be used to compute status register values.

BUG=b:253715389,b:253713774
BRANCH=none
TEST=flashrom on dedede (JSL) identifies "W25Q128.V..M" chip
TEST=flashrom -{r,v} on dedede
TEST=write/erase bios region on dedede:
     flashrom -{E,w} --layout <(echo '0x381000:0xffffff bios') -i bios

Change-Id: Ia408e1e45dc6f53c0934afd6558e301abfa48ee6
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69195
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Damien Zammit
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>

0 files changed, 0 insertions, 0 deletions