include: drivers: fpga: add doxygen group

add doxygen group for FPGA driver API

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

include/zephyr/drivers/fpga.h

@@ -17,6 +17,14 @@
 extern "C" {
 #endif
 
+/**
+ * @defgroup fpga_interface FPGA Interface.
+ * @since 2.7
+ * @version 0.1.0
+ * @ingroup io_interfaces
+ * @{
+ */
+
 enum FPGA_status {
 	/* Inactive is when the FPGA cannot accept the bitstream
 	 * and will not be programmed correctly
@@ -172,6 +180,8 @@ static inline int fpga_off(const struct device *dev)
 	return api->off(dev);
 }
 
+/** @} */
+
 #ifdef __cplusplus
 }
 #endif