fix llvm15 compilation error

fix llvm15 compilation error

With llvm15, bcc failed the compilation with the following errors:
  [100%] Building CXX object tests/cc/CMakeFiles/test_libbcc.dir/test_shared_table.cc.o
  /home/yhs/work/llvm-project/llvm/build/install/lib/libclangSema.a(SemaRISCVVectorLookup.cpp.o):
    In function `(anonymous namespace)::RISCVIntrinsicManagerImpl::InitIntrinsicList()':
    SemaRISCVVectorLookup.cpp:
    (.text._ZN12_GLOBAL__N_125RISCVIntrinsicManagerImpl17InitIntrinsicListEv+0x14b):
    undefined reference to `clang::RISCV::RVVIntrinsic::computeBuiltinTypes(
      llvm::ArrayRef<clang::RISCV::PrototypeDescriptor>, bool, bool, bool, unsigned int)'
    SemaRISCVVectorLookup.cpp:(.text._ZN12_GLOBAL__N_125RISCVIntrinsicManagerImpl17InitIntrinsicListEv+0x182):
     undefined reference to `clang::RISCV::RVVIntrinsic::computeBuiltinTypes(
     llvm::ArrayRef<clang::RISCV::PrototypeDescriptor>, bool, bool, bool, unsigned int)'
  ...
  make[1]: *** [CMakeFiles/Makefile2:1110: examples/cpp/CMakeFiles/CGroupTest.dir/all] Error 2
  ...
The failure is due to llvm upstream patch https://reviews.llvm.org/D111617
which introduced another dependency on libclangSupport.a for bcc.
To fix the issue, I added libclangSupport in cmake file.

Change-Id: Ib22adc6ed4cea639a42660ce362e22b32bdd4b85
Origin: upstream, https://github.com/iovisor/bcc/commit/c65e6c5ec5b629ef302259731df33b41b0d705ca
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>