stat: rename add_lat_percentile_sample_noprio()

stat: rename add_lat_percentile_sample_noprio()

add_lat_percentile_sample_noprio() is the regular function to add a latency
percentile sample. It adds a regular sample (it doesn't add any per
priority sample). Therefore, it makes sense that this function has no
suffix, neither _noprio nor _prio.

Drop the _noprio suffix from add_lat_percentile_sample_noprio(), to make it
more obvious that this function should be used if you want to add a regular
percentile sample.

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Link: https://lore.kernel.org/r/20211125132020.109955-5-Niklas.Cassel@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>