lib: uuid: Do not enable UUID command SPL

The uuid command is only really useful in U-Boot, but it's useless in
SPL. Worse yet, it pulls in various environment manipulation functions
as it call env_set(). Do not compile the command in in SPL.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/lib/uuid.c b/lib/uuid.c
index 5d5adf6..fa20ee3 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -271,7 +271,7 @@
 	uuid_bin_to_str(uuid_bin, uuid_str, str_format);
 }
 
-#ifdef CONFIG_CMD_UUID
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CMD_UUID)
 int do_uuid(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	char uuid[UUID_STR_LEN + 1];