lib: Fix BINMAN_FDT dependency

lib/binman.c references the following 3 ofnode APIs:
ofnode_first_subnode(), ofnode_path() and ofnode_read_bool().

These APIs get built only when DM is on. Fix the dependency then.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

lib/Kconfig

@@ -22,7 +22,7 @@ config BCH
 
 config BINMAN_FDT
 	bool "Allow access to binman information in the device tree"
-	depends on BINMAN && OF_CONTROL
+	depends on BINMAN && DM && OF_CONTROL
 	default y
 	help
 	  This enables U-Boot to access information about binman entries,