tc kselftest dependencies missing

The kselftest targets are missing tc:

make[3]: Entering directory '/build/stage/linux/tools/testing/selftests/tc-testing'
/bin/sh: 1: llc: not found
clang -I. -I/include/uapi  -Wno-compare-distinct-pointer-types \
	 -O2 -target bpf -emit-llvm -c action.c -o - |      \
llc -march=bpf -mcpu=probe  -filetype=obj -o /tmp/build-work/kselftest/tc-testing/action.o
/bin/sh: 1: clang: not found
/bin/sh: 3: llc: not found
make[3]: *** [Makefile:27: /tmp/build-work/kselftest/tc-testing/action.o] Error 127