Change in flashrom[master]: spi25_statusreg: delete spi_read_status_register()

[Nikolai Artemiev (Code Review)]

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

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

https://review.coreboot.org/c/flashrom/+/59529

to look at the new patch set (#65).

Change subject: spi25_statusreg: delete spi_read_status_register()
......................................................................

spi25_statusreg: delete spi_read_status_register()

Delete the spi_read_status_register() function because the generic
spi_read_register() function can be used instead.

This patch also converts all call sites over to spi_read_register().
A side effect is that error codes are now properly propagated and
checked.

BUG=b:195381327,b:153800563
BRANCH=none
TEST=flashrom -{r,w,E}
TEST=Tested with a W25Q128.W flash on a kasumi (AMD) dut.
     Read SR1/SR2 with --wp-status and activated various WP ranges
     that toggled bits in both SR1 and SR2.

Change-Id: I146b4b5439872e66c5d33e156451a729d248c7da
Signed-off-by: Nikolai Artemiev 
---
M chipdrivers.h
M it87spi.c
M s25f.c
M spi25.c
M spi25_statusreg.c
5 files changed, 141 insertions(+), 46 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/29/59529/65