[X86] More correctly support LIG and WIG for EVEX instructions in the disassembler tables.
[X86] More correctly support LIG and WIG for EVEX instructions in the disassembler tables.

This is similar to how we generate the VEX tables.

More fixes are still needed for the instructions that use EVEX.b (broadcast and embedded rounding).

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@316294 91177308-0d34-0410-b5e6-96231b3b80d8

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