Move DK_Misexpect for compatability with getNextAvailablePluginDiagnosticKind
Move DK_Misexpect for compatability with getNextAvailablePluginDiagnosticKind

First identified after D66324 landed.

Patch By: paulkirth
Differential Revision: https://reviews.llvm.org/D67648

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@372136 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm