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Add a boolean flag to identify the input int4 nibble pairing order

Anitha Raj requested to merge nibbleorder into main

Add a boolean flag to identify if the input int4 nibble pairing order is reversed in RHS packing micro-kernel

Two int4 values are stored in one byte. The lower order part of the byte holds the first nibble and higher order of the byte holds the second nibble. The default ordering of the nibble is specified with the input type in the RHS packing micro-kernel name. If this flag is true, this nibble pairing is reversed in the input argument.

Signed-off-by: Anitha Raj anitha.raj@arm.com

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