add do1-do7 di1 procfs

hc

2023-10-12 3124110e504ba82e43686669ed7188bcdbe72744

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# Locally computed:
sha256  7658498b26a5d2a0242e81f0cfafa0e43a2bec56f8674e7ac197dfc310866ec6  dvbsnoop-1.4.50.tar.gz