version: update to 20190911

This is another update for QEMU 4.2; the correct USB host node names
are aimed to help with full FDT rebuild on CAS.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
diff --git a/VERSION b/VERSION
index 3f31c4a..0766c00 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-20190827
+20190911