fpga: mgr: add region_id to fpga_image_info

This patch adds region_id to fpga_image_info data structure, it
allows driver to pass region id information to fpga-mgr via
fpga_image_info for fpga reconfiguration function.
Signed-off-by: NWu Hao <hao.wu@intel.com>
Acked-by: NMoritz Fischer <mdf@kernel.org>
Acked-by: NAlan Tull <atull@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/fpga/fpga-mgr.h

@@ -77,6 +77,7 @@ enum fpga_mgr_states {
  * @sgt: scatter/gather table containing FPGA image
  * @buf: contiguous buffer containing FPGA image
  * @count: size of buf
+ * @region_id: id of target region
  * @dev: device that owns this
  * @overlay: Device Tree overlay
  */
@@ -89,6 +90,7 @@ struct fpga_image_info {
 	struct sg_table *sgt;
 	const char *buf;
 	size_t count;
+	int region_id;
 	struct device *dev;
 #ifdef CONFIG_OF
 	struct device_node *overlay;