bulk: drop the limit on the max number of lines

bulk: drop the limit on the max number of lines

The limit of 64 lines max per bulk object is wrong. We may want to
retrieve all lines from a chip exporting more than 64. We'll be reducing
the role of bulk objects soon so drop this limit now.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>