[flang][OpenMP] Fix unused prefixes in function-filtering-2 test (#94330)

Co-authored-by: Andrew Gozillon <Andrew.Gozillon@amd.com>

Author: tblah

flang/test/Lower/OpenMP/function-filtering-2.f90

@@ -1,6 +1,6 @@
-! RUN: %flang_fc1 -fopenmp -flang-experimental-hlfir -emit-llvm %s -o - | FileCheck --check-prefix=LLVM %s
+! RUN: %flang_fc1 -fopenmp -flang-experimental-hlfir -emit-llvm %s -o - | FileCheck --check-prefixes=LLVM,LLVM-HOST %s
 ! RUN: %flang_fc1 -fopenmp -emit-hlfir %s -o - | FileCheck --check-prefix=MLIR %s
-! RUN: %flang_fc1 -fopenmp -fopenmp-is-target-device -flang-experimental-hlfir -emit-llvm %s -o - | FileCheck --check-prefix=LLVM %s
+! RUN: %flang_fc1 -fopenmp -fopenmp-is-target-device -flang-experimental-hlfir -emit-llvm %s -o - | FileCheck --check-prefixes=LLVM,LLVM-DEVICE %s
 ! RUN: %flang_fc1 -fopenmp -fopenmp-is-target-device -emit-hlfir %s -o - | FileCheck --check-prefix=MLIR %s
 ! RUN: bbc -fopenmp -emit-hlfir %s -o - | FileCheck --check-prefixes=MLIR-HOST,MLIR-ALL %s
 ! RUN: bbc -fopenmp -fopenmp-is-target-device -emit-hlfir %s -o - | FileCheck --check-prefixes=MLIR-DEVICE,MLIR-ALL %s
@@ -38,7 +38,7 @@ end subroutine no_declaretarget
 ! MLIR-ALL: return
 
 ! LLVM-HOST: define {{.*}} @{{.*}}main{{.*}}(
-! LLVM-HOST-NOT: {{.*}} @{{.*}}__omp_offloading{{.*}}main_{{.*}}(
+! LLVM-HOST: {{.*}} @{{.*}}__omp_offloading{{.*}}main_{{.*}}(
 ! LLVM-DEVICE-NOT: {{.*}} @{{.*}}main{{.*}}(
 ! LLVM-DEVICE: define {{.*}} @{{.*}}__omp_offloading{{.*}}main_{{.*}}(
 program main