[X86] Merge matchANDXORWithAllOnesAsANDNP into combineANDXORWithAllOnesIntoANDNP. NFCI
[X86] Merge matchANDXORWithAllOnesAsANDNP into combineANDXORWithAllOnesIntoANDNP. NFCI

It's the only caller and the logic pretty easy to combine.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@343754 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm