drivers/vpd: Add vpd_get_feature_level() API

This patch introduces the vpd_get_feature_level() API to specifically
extract the "feature_level" field from the "feature_device_info" VPD
key.

This is used to distinguish between Chromebook-Plus and regular
Chromebook devices.

The previous vpd_get_feature_device_info() API is removed as
vpd_get_feature_level() is enough to find VPD and extract the data.

Note: The new API decodes the base64-encoded "feature_device_info" VPD
data.

BUG=b:324107408
TEST=Able to build and boot google/rex0.

Change-Id: I76fc220ed792abdfefb0b1a37873b5b828bfdda8
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80805
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>

0 files changed, 0 insertions, 0 deletions