boot: Rename fit_image_get_data()

This function can only be used with FITs that use embedded data. Rename
it so this is clear.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index ac84625..64c4349 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -289,7 +289,7 @@
 		src = src_ptr + overhead;
 	} else {
 		/* Embedded data */
-		if (fit_image_get_data(fit, node, &data, &length)) {
+		if (fit_image_get_emb_data(fit, node, &data, &length)) {
 			puts("Cannot get image data/size\n");
 			return -ENOENT;
 		}
diff --git a/common/splash_source.c b/common/splash_source.c
index f43e7cc..5ac32a2 100644
--- a/common/splash_source.c
+++ b/common/splash_source.c
@@ -396,7 +396,9 @@
 
 	/* Extract the splash data from FIT */
 	/* 1. Test if splash is in FIT internal data. */
-	if (!fit_image_get_data(fit_header, node_offset, &internal_splash_data, &internal_splash_size))
+	if (!fit_image_get_emb_data(fit_header, node_offset,
+				    &internal_splash_data,
+				    &internal_splash_size))
 		memmove((void *)(uintptr_t)bmp_load_addr, internal_splash_data, internal_splash_size);
 	/* 2. Test if splash is in FIT external data with fixed position. */
 	else if (!fit_image_get_data_position(fit_header, node_offset, &external_splash_addr))
diff --git a/common/update.c b/common/update.c
index 6801b49..d149ca1 100644
--- a/common/update.c
+++ b/common/update.c
@@ -200,7 +200,7 @@
 {
 	const void *data;
 
-	if (fit_image_get_data(fit, noffset, &data, (size_t *)size))
+	if (fit_image_get_emb_data(fit, noffset, &data, (size_t *)size))
 		return 1;
 
 	if (fit_image_get_load(fit, noffset, (ulong *)fladdr))