Fixes `relevant_mask` calculation in arm32_init() to use bitwise AND
instead of OR. The previous logic incorrectly validated bits outside the
hash region, preventing valid instructions like 'BX` from being added to
the lookup table.
Increased LOOKUP_TABLE_MAX_BUCKET_SIZE from 8 to 16. Instructions with
wildcard bits in the hash region (eg, AND, EOR) must map to multiple
buckets to ensure O(1) lookup.
Signed-off-by: Ronald Caesar <github43132@proton.me>