spi core will handle validating transfer length since commit 
4d94bd21b333
"spi: core: Validate length of the transfers in message".
So remove the same checking in this driver.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
 
                goto msg_done;
 
        list_for_each_entry(t, &m->transfers, transfer_list) {
-               /* make sure buffer length is even when working in 16
-                * bit mode*/
-               if ((t->bits_per_word == 16) && (t->len & 1)) {
-                       dev_err(&spi->dev,
-                               "message rejected : "
-                               "odd data length %d while in 16 bit mode\n",
-                               t->len);
-                       status = -EIO;
-                       goto msg_done;
-               }
-
                if (par_override || t->speed_hz || t->bits_per_word) {
                        par_override = 1;
                        status = orion_spi_setup_transfer(spi, t);