bpf: Mark raw_tp arguments with PTR_MAYBE_NULL

{
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                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/bpf.h",
                        "kernel/bpf/btf.c",
                        "kernel/bpf/verifier.c",
                        "tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c"
                    ],
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{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/bpf.h",
                        "kernel/bpf/btf.c",
                        "kernel/bpf/verifier.c",
                        "tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c"
                    ],
                    "versions": [
                        {
                            "version": "6.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
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                            "status": "unaffected",
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                        {
                            "version": "6.11.11",
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                        {
                            "version": "6.12.2",
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                        {
                            "version": "6.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }