fdt: Rename fdt_resize() to fdt_shrink_to_minimum()

Since libfdt now has an fdt_resize() function, we need to rename the
U-Boot one.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/image-fdt.c b/common/image-fdt.c
index db6e395..a2342fa 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -479,7 +479,7 @@
 	lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob,
 		 (phys_size_t)fdt_totalsize(blob));
 
-	ret = fdt_resize(blob);
+	ret = fdt_shrink_to_minimum(blob);
 	if (ret < 0)
 		return ret;
 	of_size = ret;