fpga: dfl: fme-region: add support for compat_id

This patch adds compat_id support, it reuses fme manager's
compat id, as the per region compat id is actually from the
fme manager's register.

Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/dfl-fme-region.c

@@ -45,6 +45,7 @@ static int fme_region_probe(struct platform_device *pdev)
 	}
 
 	region->priv = pdata;
+	region->compat_id = mgr->compat_id;
 	platform_set_drvdata(pdev, region);
 
 	ret = fpga_region_register(region);