match: Improve broadcast opsize matching

match: Improve broadcast opsize matching

Broadcasting operand size is different from the original
operand size because 32b or 64b element is repeated to form a vector.
So when matching a broadcasting operand, opsize should be treated
differently.
The broadcasting element size is specified in the decorator information.

Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>

• [DBH] assemble.c