[NFC] Fix file header filename to be Range.h
[NFC] Fix file header filename to be Range.h



git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@371783 91177308-0d34-0410-b5e6-96231b3b80d8

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