lib: uuid: introduce testcase for uuid_str_to_le_bin

provide a test case

Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 2db0529..830c556 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1605,6 +1605,11 @@
 F:	drivers/usb/host/xhci*
 F:	include/usb/xhci.h
 
+UUID testing
+M:	Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
+S:	Maintained
+F:	test/lib/uuid.c
+
 VIDEO
 M:	Anatolij Gustschin <agust@denx.de>
 S:	Maintained