gpio: Fix pin's status display for pin with GPIOF_UNUSED function

Even pin with GPIOF_UNUSED function can have a label.
The criteria to add or not a space character is linked to label not to
the used/unused status.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index d60e461..a00880e 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -916,7 +916,7 @@
 		snprintf(str + len, buffsize - len, ": %d [%c]%s%s",
 			 ret,
 			 used ? 'x' : ' ',
-			 used ? " " : "",
+			 label ? " " : "",
 			 label ? label : "");
 		break;
 	}