[coreboot-gerrit] Change in ...coreboot[master]: intelvbttool: Add support for reading vbt from sysfs

[Alex Feinman (Code Review)]

Hello Patrick Rudolph, build bot (Jenkins), Nico Huber,

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

https://review.coreboot.org/c/coreboot/+/31531

to look at the new patch set (#4).

Change subject: intelvbttool: Add support for reading vbt from sysfs
......................................................................

intelvbttool: Add support for reading vbt from sysfs

VBT on Intel(R) systems is available via sysfs as
    /sys/kernel/debug/dri/0/i915_vbt
However the size of this file reads as 0 causing
intelvbttool to fail. This patch implements incremental reads
with realloc for such cases or whenever the file size is not
available (e.g. reading from stdin).
After this patch is applied, intelvbttool can be used as follows:
    sudo intelvbttool -f /sys/kernel/debug/dri/0/i915_vbt -d

Change-Id: I5d17095a5747550b7115a54a7619b7294a846196
Signed-off-by: Alex Feinman 
---
M util/intelvbttool/intelvbttool.c
1 file changed, 17 insertions(+), 22 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/31/31531/4