With the new msm8916-mainline kernel DT for gt510wifi is reworked to be
reused with gt58 devices. While at it, the DT was generalized to be used
with the LTE variants of the device as well as the wifi variant.
Change base dtb name to the new common dt and add an LTE-specific dt
that enavles the modem. Since variants have different secure-boot keys,
use msm-firmware-loader for that.
Also make various updates to support gpu-accelerated UI's and FDE.
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