kexec/s390: Add support for kexec_file_load

Since kernel 4.17-rc2 s390 supports the kexec_file_load system call. Add
the new system call to kexec-tools and provide the -s (--kexec-file-syscall)
option for s390 to support this new feature.

Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
2 files changed