[X86] Colocate all of the X86VBroadcast patterns for v2i64 and v2f64. NFC
[X86] Colocate all of the X86VBroadcast patterns for v2i64 and v2f64. NFC

The memory patterns were near the MOVDDUP definition, but the non-memory patterns were near the broadcast instructions.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@313494 91177308-0d34-0410-b5e6-96231b3b80d8

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