quanton: fixed dma settings for SPI1 and SPI2
quanton: remove unsued SPI DMA irq handlers
Merge pull request #252 from lilvinz/quanton_dma_fix

quanton: fixed dma settings for SPI1 and SPI2
Update hardware/Production/FlyingF3/pinout.txt

Made channel assignment text clearer.
Changed properties of labels to make text selectable.
Merge pull request #260 from Felkk/fimware_info_selectable

Changed properties of labels to make text selectable on firmware page.