MIPS: using strlcpy() instead of strncpy()

Ensure strings are always '\0' terminated.  Or in the next pr_info() shit
may hit the fan.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: david.daney@cavium.com
Cc: linux-mips@linux-mips.org
Cc: Linux-Arch <linux-arch@vger.kernel.org>
Cc: linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/5331/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>