[S] Change in coreboot[main]: drivers/spi/spi_flash: introduce 'spi_flash_cmd_multi'

[Felix Held (Code Review)]

Attention is currently required from: Ana Carolina Cabral, Matt DeVillier.

Hello Ana Carolina Cabral, Matt DeVillier, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/84789?usp=email

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

The following approvals got outdated and were removed:
Code-Review+1 by Ana Carolina Cabral, Code-Review+2 by Matt DeVillier, Verified+1 by build bot (Jenkins)

Change subject: drivers/spi/spi_flash: introduce 'spi_flash_cmd_multi'
......................................................................

drivers/spi/spi_flash: introduce 'spi_flash_cmd_multi'

A following patch that adds some support for reading the serial flash
discoverable parameters (SFDP) data structures needs to send more than
just the one command byte that 'spi_flash_cmd' supports. To be able to
do this, introduce the 'spi_flash_cmd_multi' function which supports
sending multiple bytes before reading back some bytes. The prototype is
added to drivers/spi/spi_flash_internal.h since only other files in the
same directory are supposed to be using that function.

Signed-off-by: Felix Held 
Change-Id: I1f3872463249240c0a32e2825e4302894e856b2e
---
M src/drivers/spi/spi_flash.c
M src/drivers/spi/spi_flash_internal.h
2 files changed, 14 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/84789/5