docs(release): changelog for v2.10 release

Signed-off-by: Juan Pablo Conde <juanpablo.conde@arm.com>
Change-Id: I20216a4b6114a89187e4d88d23542592b78bfbff
diff --git a/Makefile b/Makefile
index 535edf1..90f8037 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 
 # TFTF Version
 VERSION_MAJOR		:= 2
-VERSION_MINOR		:= 9
+VERSION_MINOR		:= 10
 
 MAKE_HELPERS_DIRECTORY := make_helpers/
 include ${MAKE_HELPERS_DIRECTORY}build_macros.mk