libfdt: Upgrade libfdt source files
Update the libfdt source files, the upstream commit is 73e0f143b73d
("libfdt: fdt_strerror(): Fix comparison warning").

This brings us the fixes for the signed/unsigned comparison warnings,
so platforms can enable -Wsign-compare now.

Change-Id: I303d891c82ffea0acefdde27289339db5ac5a289
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
1 parent 6e4da01 commit 3b456661e9ed6c4de048c78d95d329bb2c57ecfd
@Andre Przywara Andre Przywara authored on 1 Oct 2020
Alexei Fedorov committed on 2 Oct 2020
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include/lib/libfdt/libfdt.h
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lib/libfdt/fdt.c
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lib/libfdt/fdt_overlay.c
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lib/libfdt/fdt_ro.c
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lib/libfdt/fdt_rw.c
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lib/libfdt/fdt_strerror.c
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lib/libfdt/fdt_sw.c
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lib/libfdt/fdt_wip.c