bootstd: Make BOOTSTD_FULL depend on BOOTSTD

Move BOOTSTD_FULL down in the file so that it can be enabled only when
BOOTSTD is enabled. This prevents a build error if BOOTSTD is disabled
but BOOTSTD_FULL is enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/boot/Kconfig b/boot/Kconfig
index 8c27f52..4094ad3 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -397,19 +397,6 @@
 	        U-Boot)
 	    - bootflow - a description of how to boot (owned by the distro)
 
-config BOOTSTD_FULL
-	bool "Enhanced features for standard boot"
-	default y if SANDBOX
-	help
-	  This enables various useful features for standard boot, which are not
-	  essential for operation:
-
-	  - bootdev, bootmeth commands
-	  - extra features in the bootflow command
-	  - support for selecting the ordering of bootmeths ("bootmeth order")
-	  - support for selecting the ordering of bootdevs using the devicetree
-	    as well as the "boot_targets" environment variable
-
 config SPL_BOOTSTD
 	bool "Standard boot support in SPL"
 	depends on SPL && SPL_DM && SPL_OF_CONTROL && SPL_BLK
@@ -432,6 +419,19 @@
 
 if BOOTSTD
 
+config BOOTSTD_FULL
+	bool "Enhanced features for standard boot"
+	default y if SANDBOX
+	help
+	  This enables various useful features for standard boot, which are not
+	  essential for operation:
+
+	  - bootdev, bootmeth commands
+	  - extra features in the bootflow command
+	  - support for selecting the ordering of bootmeths ("bootmeth order")
+	  - support for selecting the ordering of bootdevs using the devicetree
+	    as well as the "boot_targets" environment variable
+
 config BOOTSTD_DEFAULTS
 	bool "Select some common defaults for standard boot"
 	depends on BOOTSTD