feat(build_package): run memory map script as a part of build

Added memmap build option to run memory map script(print_memory_map.py)
as a part of build.

Change-Id: I9b49d202016c07141f157a4ccfe6c23f085812ba
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/script/build_package.sh b/script/build_package.sh
index 4b88946..7a4b3e7 100755
--- a/script/build_package.sh
+++ b/script/build_package.sh
@@ -477,7 +477,7 @@
 	config_file="${tf_build_config:-$tf_config_file}"
 
 	# Build fiptool and all targets by default
-	build_targets="${tf_build_targets:-fiptool all}"
+	build_targets="${tf_build_targets:-memmap fiptool all}"
 
 	source "$config_file"