fpga: zynqmp: add str2flags call

Add a call to convert FPGA "compatible" string to a binary flag.

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/20220722141614.297383-5-oleksandr.suvorov@foundries.io
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c
index 8ff12bf..19d079c 100644
--- a/drivers/fpga/zynqmppl.c
+++ b/drivers/fpga/zynqmppl.c
@@ -304,10 +304,19 @@
 	return ret;
 }
 
+static int __maybe_unused zynqmp_str2flag(xilinx_desc *desc, const char *str)
+{
+	if (!strncmp(str, "u-boot,fpga-legacy", 18))
+		return FPGA_LEGACY;
+
+	return 0;
+}
+
 struct xilinx_fpga_op zynqmp_op = {
 	.load = zynqmp_load,
+	.info = zynqmp_pcap_info,
 #if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE)
 	.loads = zynqmp_loads,
+	.str2flag = zynqmp_str2flag,
 #endif
-	.info = zynqmp_pcap_info,
 };