fpga: dfl: remove unused member pdata from struct dfl_{afu,fme}

fpga: dfl: remove unused member pdata from struct dfl_{afu,fme}

The member pdata in struct dfl_{afu,fme} is set in function
{afu,fme}_dev_init(), respectively, but never used.

Fixes: 857a26222ff7 ("fpga: dfl: afu: add afu sub feature support")
Fixes: 29de76240e86 ("fpga: dfl: fme: add partial reconfiguration sub feature support")
Signed-off-by: Peter Colberg <peter.colberg@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20240415235937.3121-1-peter.colberg@intel.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>