add vs6621s support in kernel

lin

2025-07-31 065ea569db06206874bbfa18eb25ff6121aec09b

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FOUR
ONE
FOURTEEN
NINE
FIVE
TWELVE
SamePackagePublicEnum
basis: performed 10000 iterations
test1: performed 10000 iterations
test2: performed 10000 iterations
test3: performed 10000 iterations
Timing is acceptable.