fixed: gps sensor can not recover from timeout in gps fix estimation mode

[RomanLut]

if gps sensor reset for some reason(hw problem?) and got into timeout state, and gps fix estimation mode is enabled, gps sensor is unable to reinitialize because timeout is reset to small value.

[Jetrell]

if gps sensor reset for some reason(hw problem?)

@RomanLut This has been reported with more prevalence, since the 7.0 release.
I've had it happen a few times. But only on one of my builds.
Its using a Walksnail M10, and only occurs at boot up. So it could be HW.

What GPS unit have you experienced it occurring with ?

[RomanLut]

What GPS unit have you experienced it occurring with ?

Note that this submit fixes a problem where GPS sensor can not be reinitialized after occassional reboot (bad power supply?) while gps fix estimation mode is active (either enabled by GPS OFF logic condition or due to GPS fix loss). It is not related to any problem with GPS sensor where gps fix estimation is not enabled in settings or is not active. Model of sensor is not relevant, it will happend will any sensor because gps fix estimation code prevents reinitialization.

[RomanLut]

@DzikuVx Can we have this is the next release? This is fix for edge case in the gpx fix estimation feature.

[sensei-hacker]

Looks like a straightforward fix.
What could go wrong if it's PR'ed to 8.0?

[MrD-RC]

I think it will need to be 8.1. This PR has been pretty silent. It probably should have been merged in to master a long time ago.

The issue is 8.0 is already in RC. This is potentially a simple change. But where this is an edge case. I think having it in master for peer testing would be safer than putting it in to 8.0. Which maybe has 1 or 2 more RC releases before is it stable.

[Jetrell]

@MrD-RC If it can be added to 8.0 RC, it would be very useful for #8347

As @RomanLut said..

Note that this submit fixes a problem where GPS sensor can not be reinitialized after occassional reboot (bad power supply?) while gps fix estimation mode is active (either enabled by GPS OFF logic condition or due to GPS fix loss).

Many times I have tested that feature using the logic condition to disable GNSS sensor fix. I have to land and reboot the FC to get the GNSS unit to communicate again.