docs(changelog): changelog for v2.11 release

Generated this change-log using below command:
npm run release -- --skip.commit --skip.tag --release-as 2.11.0

Change-Id: I34c7b342549781057da1b18116500f110bc3f5ad
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Signed-off-by: Juan Pablo Conde <JuanPablo.Conde@arm.com>
diff --git a/Makefile b/Makefile
index d072df0..0ae3c10 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@
 # Trusted Firmware Version
 #
 VERSION_MAJOR			:= 2
-VERSION_MINOR			:= 10
+VERSION_MINOR			:= 11
 # VERSION_PATCH is only used for LTS releases
 VERSION_PATCH			:= 0
 VERSION				:= ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}