Import from:

git://git.kernel.org/pub/scm/utils/dtc/dtc.git

commit 2cd89f862cdb04d91c5d59c5b39647f7d5d5b3b8
Author: David Gibson <david@gibson.dropbear.id.au>
Date:   Mon Nov 21 14:18:44 2022 +1100

    dtc: Warning rather than error on possible truncation of cell values

    We always evaluate integer values in cell arrays as 64-bit quantities, then
    truncate to the size of the array cells (32-bit by default).  However to
    detect accidental truncation of meaningful values, we give an error if the
    truncated portion isn't either all 0 or all 1 bits.  However, this can
    still give counterintuitive errors.  For if the user is thinking in 2's
    complement 32-bit arithmetic (which would be quite natural), then they'd
    expect the expression (-0xffffffff-2) to evaluate to -1 (0xffffffff).
    However in 64-bit it evaluates to 0xfffffffeffffffff which does truncate
    to the expected value but trips this error message.

    Because of this reduce the error to only a warnings, with a somewhat more
    helpful message.

    Fixes: https://github.com/dgibson/dtc/issues/74

    Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Commands to generate update patches:

git format-patch 2cd89f862cdb04d91c5d59c5b39647f7d5d5b3b8 -- libfdt/fdt_addresses.c libfdt/fdt.c libfdt/fdt_empty_tree.c libfdt/fdt.h libfdt/fdt_ro.c libfdt/fdt_rw.c libfdt/fdt_strerror.c libfdt/fdt_sw.c libfdt/fdt_wip.c libfdt/libfdt_env.h libfdt/libfdt.h libfdt/libfdt_internal.h libfdt/TODO
sed -i 's%/libfdt/fdt.h%/cpukit/include/fdt.h%g' 00*
sed -i 's%/libfdt/libfdt.h%/cpukit/include/libfdt.h%g' 00*
sed -i 's%/libfdt/libfdt_env.h%/cpukit/include/libfdt_env.h%g' 00*
sed -i 's%/libfdt/%/cpukit/dtc/libfdt/%g' 00*