release: Updates for v2.6.0

VERSION and conf.py updates for v2.6.0 release

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
diff --git a/VERSION b/VERSION
index 82d309d..3e292da 100644
--- a/VERSION
+++ b/VERSION
@@ -2,4 +2,3 @@
 VERSION_MINOR = 6
 PATCHLEVEL = 0
 VERSION_TWEAK = 0
-EXTRAVERSION = rc3
diff --git a/doc/conf.py b/doc/conf.py
index 6e0df88..a0e7ccd 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -142,6 +142,7 @@
     "current_version": version,
     "versions": (
         ("latest", "/"),
+        ("2.6.0", "/2.6.0/"),
         ("2.5.0", "/2.5.0/"),
         ("2.4.0", "/2.4.0/"),
         ("2.3.0", "/2.3.0/"),