[Flang][OpenMP][ROCM] Enable rocm-device-lib-path for flang (llvm#135307)

Currently rocm-device-lib-path is not enabled for Flang, so when the
compiler warns / requests a user to provide this option in cases where
it can't find rocm a user cannot actually set the device libraries using
rocm-device-lib-path. The alternative rocm_path that's also mentioned
via the warning can be used, but we should enable both mentioned options
to not confuse users (and myself).

Author: agozillon

clang/include/clang/Driver/Options.td

@@ -1341,8 +1341,8 @@ def hipstdpar_prim_path_EQ : Joined<["--"], "hipstdpar-prim-path=">,
   HelpText<
     "rocPrim path, required by the HIP Standard Parallel Algorithm "
     "Acceleration library, used to implicitly include the rocPrim library">;
-def rocm_device_lib_path_EQ : Joined<["--"], "rocm-device-lib-path=">, Group<hip_Group>,
-  HelpText<"ROCm device library path. Alternative to rocm-path.">;
+def rocm_device_lib_path_EQ : Joined<["--"], "rocm-device-lib-path=">, Visibility<[FlangOption]>,
+  Group<hip_Group>, HelpText<"ROCm device library path. Alternative to rocm-path.">;
 def : Joined<["--"], "hip-device-lib-path=">, Alias<rocm_device_lib_path_EQ>;
 def hip_device_lib_EQ : Joined<["--"], "hip-device-lib=">, Group<hip_Group>,
   HelpText<"HIP device library">;

flang/test/Driver/omp-driver-offload.f90

@@ -181,6 +181,11 @@
 ! RUN:   | FileCheck --check-prefix=ROCM-PATH %s
 ! ROCM-PATH: Found HIP installation: {{.*Inputs.*rocm}}, version 3.6.20214-a2917cd
 
+! RUN: %flang -### -target x86_64-pc-linux-gnu -fopenmp --offload-arch=gfx900 \
+! RUN:      --rocm-device-lib-path=%S/Inputs/rocm/amdgcn/bitcode %s  2>&1 | \
+! RUN: FileCheck %s --check-prefix=ROCM-DEVICE-LIB
+! ROCM-DEVICE-LIB: "-fc1" {{.*}}ocml.bc"{{.*}}oclc_daz_opt_off.bc"{{.*}}oclc_unsafe_math_off.bc"{{.*}}oclc_finite_only_off.bc"{{.*}}oclc_correctly_rounded_sqrt_on.bc"{{.*}}oclc_wavefrontsize64_on.bc"{{.*}}oclc_isa_version_900.bc"
+
 ! Test -fopenmp-force-usm option without offload
 ! RUN: %flang -S -### %s -o %t 2>&1 \
 ! RUN: -fopenmp -fopenmp-force-usm \