Limit btsnoop file size (4/8)

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
Merged-In: I94f8f6bc12ab3f7ff406c9392934ecb7209cd635
Change-Id: I94f8f6bc12ab3f7ff406c9392934ecb7209cd635