[M] Change in flashrom[master]: ni845x_spi: pass global state through func params

[Alexander Goncharov (Code Review)]

Attention is currently required from: Miklós Márton, Alexander Goncharov.

Hello build bot (Jenkins), Miklós Márton, Anastasia Klimchuk,

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

https://review.coreboot.org/c/flashrom/+/72154

to look at the new patch set (#5).

Change subject: ni845x_spi: pass global state through func params
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ni845x_spi: pass global state through func params

Instead of relying on global variables, pass and use their value or
pointer to functions where possible.

The usage of `io_voltage_in_mV` global var in `usb8452_spi_set_io_voltage`
function is replaced with existing function argument `set_io_voltage_mV`
since `set_io_voltage_mV` already contains the pointer to global var.

This patch prepares the programmer to move global singleton states into
a struct.

TOPIC=register_master_api

Change-Id: I5daeb0839a4cc18b82d38cc06eeba88a619bec61
Signed-off-by: Alexander Goncharov 
Ticket: https://ticket.coreboot.org/issues/391
---
M ni845x_spi.c
1 file changed, 41 insertions(+), 12 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/54/72154/5