FPGA Manager changes for 5.15-rc1

FPGA Manager

- Colin's change is a simple spelling cleanup.

DFL

- Martin's fist change exposes DFL feature revision to client drivers
- Martin's second change modifies a SPI driver to populate different
  spi_board_info modaliases based on the DFL feature revision

All patches have been reviewed on the mailing list, and have been in the
last few linux-next releases (as part of my for-next branch) without issues.

Signed-off-by: Moritz Fischer <mdf@kernel.org>
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