Transform `(icmp eq/ne Abs(A), Pow2)` -> `(and/or (icmp eq/ne A,Pow2), (icmp eq/ne A,-Pow2))`

Only if Abs(A) has one use, in which case the `(and/or (icmp eq/ne
A,Pow2), (icmp eq/ne A,-Pow2))` can be optimized in
`DAGCombiner::foldAndOrOfSETCC`.

Alive Links:
EQ: https://alive2.llvm.org/ce/z/gTxSgV
NE: https://alive2.llvm.org/ce/z/MUf57Y

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D142345