README: Fix typo in description of CONFIG_OF_EMBED

The correct name is 'gd->fdt_blob', not 'gd->blob'.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed