7eab8ef8b7
The upstream build system uses a newly introduced function `read-file`, so copy that in from Linux 6.2. TEST=`util/abuild/abuild -C` output (config.h and config.build) remains the same Change-Id: Ic100bf189ebd3eaa0eb26904ae8602910329a180 Signed-off-by: Patrick Georgi <patrick@coreboot.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/79179 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin L Roth <gaumless@gmail.com>