lib: uuid: move CONFIG_RANDOM_UUID

This option is independent from any commands and should be managed
under lib. For instance, drivers/block/rkmtd.c is a user.

It would be better to remove this configuration.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/lib/Kconfig b/lib/Kconfig
index 1964951..0c3afae 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -74,6 +74,13 @@
 config LIB_UUID
 	bool
 
+config RANDOM_UUID
+	bool "GPT Random UUID generation"
+	select LIB_UUID
+	help
+	  Enable the generation of partitions with random UUIDs if none
+	  are provided.
+
 config SPL_LIB_UUID
 	depends on SPL
 	bool