Changelog:
==========
-Mark graceful_exit as noreturn
-Mark global variables as "static" since there's only one source file
-gitlab CI: stop requiring Signed-off-by in commits
-Fix overflow on XmbLookupString buffer
(From OE-Core rev: 282c501690f30b8cad6a2439372d14f868af2fb0)
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>