mdadm/platform-intel: buffer overflow detected

mdadm/platform-intel: buffer overflow detected

mdadm -CR /dev/md0 -l1 -n2 /dev/nvme0n1 /dev/nvme2n1
*** buffer overflow detected ***: terminated
Aborted (core dumped)

It doesn't happen 100% and it depends on the building environment.
It can be fixed by replacing sprintf with snprintf.

Fixes: d835518b6b53 ('imsm: nvme multipath support')
Reported-by: Guang Wu <guazhang@redhat.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>