Pull more Kbuild fixes from Masahiro Yamada:
- fix scripts/kallsyms.c to correctly check too long symbol names
- fix sh build error for the combination of CONFIG_OF_EARLY_FLATTREE=y
and CONFIG_USE_BUILTIN_DTB=n
* tag 'kbuild-fixes-v5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
sh: fix build error for invisible CONFIG_BUILTIN_DTB_SOURCE
kallsyms: Handle too long symbols in kallsyms.c