[NFC] Update llc-pipeline.ll for SPIRV target added by commit 301ecc6 (#20527)

Author: fzou1

llvm/test/CodeGen/SPIRV/llc-pipeline.ll

@@ -32,6 +32,7 @@
 ; SPIRV-O0-NEXT:      SPIR-V Regularizer
 ; SPIRV-O0-NEXT:    SPIRV prepare functions
 ; SPIRV-O0-NEXT:    FunctionPass Manager
+; SPIRV-O0-NEXT:      FPBuiltin Function Selection
 ; SPIRV-O0-NEXT:      Lower invoke and unwind, for unwindless code generators
 ; SPIRV-O0-NEXT:      Remove unreachable blocks from the CFG
 ; SPIRV-O0-NEXT:      SPIRV strip convergent intrinsics
@@ -131,6 +132,7 @@
 ; SPIRV-Opt-NEXT:      SPIR-V Regularizer
 ; SPIRV-Opt-NEXT:    SPIRV prepare functions
 ; SPIRV-Opt-NEXT:    FunctionPass Manager
+; SPIRV-Opt-NEXT:      FPBuiltin Function Selection
 ; SPIRV-Opt-NEXT:      Dominator Tree Construction
 ; SPIRV-Opt-NEXT:      Natural Loop Information
 ; SPIRV-Opt-NEXT:      CodeGen Prepare