Merge pull request #4616 from shenki/buildroot-2021.02.10

buildroot: Update to 2021.02.10 stable point release
diff --git a/buildroot b/buildroot
index 2c7a998..2b611ab 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 2c7a9984796b03506a1a2b1ccf3f76fc85733c17
+Subproject commit 2b611ab062a57fdc287be80f8e9d28d64ceb1b52