coresight: etm4x: fix underflow for usage of (nrseqstate - 1)

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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                        "drivers/hwtracing/coresight/coresight-etm4x-cfg.c",
                        "drivers/hwtracing/coresight/coresight-etm4x-core.c",
                        "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c",
                        "drivers/hwtracing/coresight/coresight-etm4x.h"
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{
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hwtracing/coresight/coresight-etm4x-cfg.c",
                        "drivers/hwtracing/coresight/coresight-etm4x-core.c",
                        "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c",
                        "drivers/hwtracing/coresight/coresight-etm4x.h"
                    ],
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                            "versionType": "original_commit_for_fix"
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                }