SPL: Add struct spl_boot_device parameter into spl_parse_board_header()

Add parameter spl_boot_device to spl_parse_board_header(), which allows
the implementations to see from which device we are booting and do
boot-device-specific checks of the image header.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/common/spl/spl.c b/common/spl/spl.c
index c5360f3..653e71f 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -312,6 +312,7 @@
 #endif
 
 __weak int spl_parse_board_header(struct spl_image_info *spl_image,
+				  const struct spl_boot_device *bootdev,
 				  const void *image_header, size_t size)
 {
 	return -EINVAL;
@@ -326,6 +327,7 @@
 }
 
 int spl_parse_image_header(struct spl_image_info *spl_image,
+			   const struct spl_boot_device *bootdev,
 			   const struct image_header *header)
 {
 #if CONFIG_IS_ENABLED(LOAD_FIT_FULL)
@@ -369,7 +371,7 @@
 		}
 #endif
 
-		if (!spl_parse_board_header(spl_image, (const void *)header, sizeof(*header)))
+		if (!spl_parse_board_header(spl_image, bootdev, (const void *)header, sizeof(*header)))
 			return 0;
 
 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT