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E-ink migration: GDEQ031T10 needs a UC8253 driver implementation #11354

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@caveman99

The GDEQ031T10 (320x240, 3.1 inch) panel uses a UC8253 controller, but the driver in src/graphics/eink/Drivers/GDEQ031T10.h currently extends the SSD16XX base, whose command set does not match UC8253. Flagged by review in #11142.

No converted variant instantiates this driver yet, so nothing is broken today. The rewrite is scheduled for the PR that migrates its target board (t-deck-pro) to the shared e-ink layer, where full and fast refresh paths can be verified on hardware.

Part of the gradual e-ink driver migration (#11142, target-by-target conversions).

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