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 <felix-coreboot@felixheld.de>
Change-Id: I1f3872463249240c0a32e2825e4302894e856b2e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84789
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions