Update buildroot to 2021.02.1 (#1312)

Signed-off-by: Stefan Agner <stefan@agner.ch>

buildroot/package/efivar/0005-ucs2.h-remove-unused-variable.patch

@@ -0,0 +1,35 @@
+From fdb803402fb32fa6d020bac57a40c7efe4aabb7d Mon Sep 17 00:00:00 2001
+From: Javier Martinez Canillas <javierm@redhat.com>
+Date: Tue, 5 Mar 2019 17:23:24 +0100
+Subject: [PATCH] ucs2.h: remove unused variable
+
+The const uint16_t pointer is not used since now the two bytes of the
+UCS-2 chars are checked to know if is the termination of the string.
+
+Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ src/ucs2.h | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/src/ucs2.h b/src/ucs2.h
+index edd8367..e0390c3 100644
+--- a/src/ucs2.h
++++ b/src/ucs2.h
+@@ -26,12 +26,11 @@ static inline size_t UNUSED
+ ucs2len(const void *vs, ssize_t limit)
+ {
+ 	ssize_t i;
+-	const uint16_t *s = vs;
+ 	const uint8_t *s8 = vs;
+ 
+ 	for (i = 0;
+ 	     i < (limit >= 0 ? limit : i+1) && s8[0] != 0 && s8[1] != 0;
+-	     i++, s8 += 2, s++)
++	     i++, s8 += 2)
+ 		;
+ 	return i;
+ }
+-- 
+2.20.1
+