build: Update TF-RMM release version to v0.4.0

Bump up the TF-RMM version to 0.4.0. This has been tested with
TF-A v2.10 release.

Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Change-Id: I484b7fd34b5e5f2a9b177869be76344c420d8eba
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ba8879..bddf801 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,7 @@
 # and also where the project directory and version variables are set up.
 #
 
-project(RMM VERSION 0.3.0 LANGUAGES C CXX ASM)
+project(RMM VERSION 0.4.0 LANGUAGES C CXX ASM)
 
 #
 # Set global flags.