Add a few missed source files to libllvm, for the MK_LLVM_TARGET_BPF=yes

case.  Otherwise, linking of clang and other llvm based executables
would complain about missing symbols.

Reported by:	rstone
MFC after:	1 month
X-MFC-With:	r353358

lib/clang/libllvm/Makefile

@@ -1046,6 +1046,7 @@ SRCS_MIN+=	Target/ARM/Utils/ARMBaseInfo.cpp
 .endif # MK_LLVM_TARGET_ARM
 .if ${MK_LLVM_TARGET_BPF} != "no"
 SRCS_MIN+=	Target/BPF/AsmParser/BPFAsmParser.cpp
+SRCS_MIN+=	Target/BPF/BPFAbstractMemberAccess.cpp
 SRCS_MIN+=	Target/BPF/BPFAsmPrinter.cpp
 SRCS_MIN+=	Target/BPF/BPFFrameLowering.cpp
 SRCS_MIN+=	Target/BPF/BPFISelDAGToDAG.cpp
@@ -1054,6 +1055,7 @@ SRCS_MIN+=	Target/BPF/BPFInstrInfo.cpp
 SRCS_MIN+=	Target/BPF/BPFMCInstLower.cpp
 SRCS_MIN+=	Target/BPF/BPFMIChecking.cpp
 SRCS_MIN+=	Target/BPF/BPFMIPeephole.cpp
+SRCS_MIN+=	Target/BPF/BPFMISimplifyPatchable.cpp
 SRCS_MIN+=	Target/BPF/BPFRegisterInfo.cpp
 SRCS_MIN+=	Target/BPF/BPFSelectionDAGInfo.cpp
 SRCS_MIN+=	Target/BPF/BPFSubtarget.cpp