On the STM32N6 the DMA memory meant to be used with the SPI bus is
in the low-performance memory domain. Moving the DMA buffers and
linked list buffers there reduces the AHB cycle time by the DMA
controller making it more stable.
The FLIR Lepton driver now continously receives frames in the background
that are stored in allocated frame buffers. On snapshot the stored frame
is post-processed to produce a color an image.
* Transpose now works allowing for image rotation with IMU.
* Bilinear scaling is now used when drawing at a higher res.