release: Move version to 1.12.0-rc1

Updates the VERSION file to 1.12.0-rc1

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
diff --git a/VERSION b/VERSION
index 0d6ee83..3253c52 100644
--- a/VERSION
+++ b/VERSION
@@ -1,5 +1,5 @@
 VERSION_MAJOR = 1
-VERSION_MINOR = 11
-PATCHLEVEL = 99
+VERSION_MINOR = 12
+PATCHLEVEL = 0
 VERSION_TWEAK = 0
-EXTRAVERSION =
+EXTRAVERSION = rc1