fdt: Allow libfdt in TPL

In some cases (e.g. sandbox with verified boot) it is useful to support
libfdt in TPL. Update the Kconfig to handle this.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/lib/Kconfig b/lib/Kconfig
index b711d62..ccab426 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -353,6 +353,16 @@ config SPL_OF_LIBFDT
          particular compatible nodes. The library operates on a flattened
          version of the device tree.
 
+config TPL_OF_LIBFDT
+       bool "Enable the FDT library for TPL"
+       default y if TPL_OF_CONTROL
+       help
+         This enables the FDT library (libfdt). It provides functions for
+         accessing binary device tree images in memory, such as adding and
+         removing nodes and properties, scanning through the tree and finding
+         particular compatible nodes. The library operates on a flattened
+         version of the device tree.
+
 config FDT_FIXUP_PARTITIONS
        bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
        depends on OF_LIBFDT