Update version for v10.2.0-rc2 release

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/VERSION b/VERSION
index 5b71bdb..a0f6b4d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-10.1.91
+10.1.92