Closes #203

The 2M phy caused problems when turning on encryption. I'm also
disabling the coded phy as I don't know it it works and need to first
test it with a phone/central which has support.

Closes #172

Adds an option to write a btsnoop compatible log file containing BLE
traffic. A new file is created after each boot if BLE is activated and
the `ble_log_enable` option is set in `card10.cfg`. The last 10 logs are
kept via log rotation.

Mainly to ease development ATM

Not that it really matters much at the moment as we allow bondings at
any point in time, but this will hopefully change soon.

It's 44 years since the release of vi and sadly lots of editors still
don't care about trimming off trailing spaces ...

Signed-off-by: Rahix <rahix@rahix.de>

This speeds up file transfers from Linux machines. Looks like the impact
on power consumption is not too large. Android also does not seem to
take this into account.

The mac Adress was printed in the wrong order, BLE stroes the MAC
address in LSB first mode, different from Ethernet which uses MSB first
mode.

Fixes: aece2960 ("feat(ble): Add some log messages")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Instead of setting these values to 0, use the same settings as used in
lib/sdk/Libraries/BTLE/stack/ble-host/sources/stack/cfg/cfg_stack.c from
the Cordio SDK instead of 0.

In my small test these value sare not use in the normal pairing process,
so I think this is not fixing any problem.

Fixes: 4107bd22 ("hack(ble): Temporarily silence a warning")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

With the increased warning-level, GCC warns about three unused fields in
`bleSmpCfg`:

    - maxAttemptTimeout: Maximum 'Repeated attempts' timeout in msec
    - attemptDecTimeout: Time msec before attemptExp decreases
    - attemptExp: Exponent to raise attemptTimeout on maxAttempts

These should probably be set to sensible values but to make !360
mergeable, explicitly set them to zero for now.

Signed-off-by: Rahix <rahix@rahix.de>

Also decrease the time needed to update the LEDs