Limit btsnoop file size (3/9)

Limit btsnoop file size by rotating between snoop files. The rotation occurrs
when a fixed number of packets have been logged and will start overwriting
the older file.

Bug: 35998031
Test: Enable snoop logs from developer options and let logs get large
Change-Id: I40d5da4c1b1c9b45908e5790d130f1c5e804c773