linux-user, scripts: add a script to update syscall.tbl

scripts/update-syscalltbl.sh has the list of syscall.tbl to update and
can copy them from the linux source directory

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200310103403.3284090-19-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2 files changed