[LoongArch] Add Scalar link component

Fix the lld link error on ppc64le builders:
```
ld.lld: error: undefined symbol: llvm::createLoopDataPrefetchPass()
>>> referenced by LoongArchTargetMachine.cpp
>>>               lib/Target/LoongArch/CMakeFiles/LLVMLoongArchCodeGen.dir/LoongArchTargetMachine.cpp.o:((anonymous namespace)::LoongArchPassConfig::addIRPasses())
collect2: error: ld returned 1 exit status`
```

Reviewed By: sdesmalen

Differential Revision: https://reviews.llvm.org/D146806

diff --git a/llvm/lib/Target/LoongArch/CMakeLists.txt b/llvm/lib/Target/LoongArch/CMakeLists.txt
index 3239dd7776ebaf10e83464aa17197c1a3d891cef..58709f5fe7dafb6209a2a8aaaaa839a3f555a194 100644 (file)
--- a/llvm/lib/Target/LoongArch/CMakeLists.txt
+++ b/llvm/lib/Target/LoongArch/CMakeLists.txt
@@ -35,6 +35,7 @@ add_llvm_target(LoongArchCodeGen
   MC
   LoongArchDesc
   LoongArchInfo
+  Scalar
   SelectionDAG
   Support
   Target