temp/eg25-manager: GNSS assistance support, sync with modem-power, etc.

Apply the following patches until upstream merges them all:

The custom eg25-manager configs we shipped are replaced by the GNSS assistance patch for now. Once we setup a mirror at pmOS for the GNSS assistance data, we can ship custom configs again to set the default URL to the pmOS mirror. This avoids phoning home to Qualcomm.

I run this patch for several weeks already without any problem, GNSS lock is way faster!

💡 When more people test this change and as soon as it is merged and released upstream, this package is upstreamed again to Alpine.

Edited by Dylan Van Assche

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