buildroot: Fedora 32 build fixes

Julien Olivain (1):
      package/dtc: bump version to 1.6.0

Peter Seiderer (1):
      package/squashfs: fix host compile multiple definitions

Stewart Smith (1):
      Disable -Werror for localedef

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/buildroot b/buildroot
index 522600d..4a064c9 160000
--- a/buildroot
+++ b/buildroot
@@ -1 +1 @@
-Subproject commit 522600dd45a0200a420d3d28fe166e82f40594b5
+Subproject commit 4a064c9005c800a115a81cc8be0627a35a5954d6