GCC BPF: factor out into a separate job #203

Job	Run time
x86_64-gcc / build-release	0s
x86_64-llvm-17 / build-release	0s
x86_64-gcc / build / build for x86_64 with gcc	11m 0s
x86_64-llvm-17 / build / build for x86_64 with llvm-17	10m 16s
x86_64-llvm-17 / GCC BPF / test	18m 59s
x86_64-llvm-17 / test (test_progs, false, 360) / test_progs on x86_64 with llvm-17	7m 46s
x86_64-llvm-17 / test (test_maps, false, 360) / test_maps on x86_64 with llvm-17	3m 59s
x86_64-llvm-17 / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with llvm-17	8m 55s
x86_64-llvm-17 / test (test_verifier, false, 360) / test_verifier on x86_64 with llvm-17	45s
x86_64-gcc / GCC BPF / test	18m 4s
x86_64-gcc / test (test_progs, false, 360) / test_progs on x86_64 with gcc	7m 53s
x86_64-gcc / test (test_maps, false, 360) / test_maps on x86_64 with gcc	3m 52s
x86_64-gcc / test (test_progs_no_alu32, false, 360) / test_progs_no_alu32 on x86_64 with gcc	8m 10s
x86_64-gcc / test (test_verifier, false, 360) / test_verifier on x86_64 with gcc	1m 5s
	1h 40m 44s

Provide feedback