staging: lustre: lclient: lcommon_misc.c fixing coding style issues

fixed warning:
* WARNING: min() should probably be min_t(__u32, desc.ld_tgt_count,
LOV_MAX_STRIPE_COUNT)

Signed-off-by: Anil Belur <askb23@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>