fpga: xilinx: add bitstream flags to driver desc

Store a set of supported bitstream types in xilinx_desc structure.
It will be used to determine whether an FPGA image is able to be
loaded with a given driver.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Tested-by: Ricardo Salveti <ricardo@foundries.io>
Tested-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Link: https://lore.kernel.org/r/20220722141614.297383-4-oleksandr.suvorov@foundries.io
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/include/xilinx.h b/include/xilinx.h
index 362943b..d9e4b8d 100644
--- a/include/xilinx.h
+++ b/include/xilinx.h
@@ -37,6 +37,9 @@
 	max_xilinx_type		/* insert all new types before this */
 } xilinx_family;		/* end, typedef xilinx_family */
 
+/* FPGA bitstream supported types */
+#define FPGA_LEGACY			BIT(0)
+
 typedef struct {		/* typedef xilinx_desc */
 	xilinx_family family;	/* part type */
 	xilinx_iface iface;	/* interface type */
@@ -45,6 +48,7 @@
 	int cookie;		/* implementation specific cookie */
 	struct xilinx_fpga_op *operations; /* operations */
 	char *name;		/* device name in bitstream */
+	int flags;		/* compatible flags */
 } xilinx_desc;			/* end, typedef xilinx_desc */
 
 struct xilinx_fpga_op {