Seungha Yang authored Jun 25, 2020 and Nicolas Dufresne committed Jul 14, 2020

... and do more strict validation for num_tile_columns_minus1 and
num_tile_rows_minus1.

As per specification Table A.8, allowed maximum number of tile rows
and tile columns are 22 and 20, respectively. So we should adjust the size
of each array.

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