sim: add tests for partial ram-loading

Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/sim/tests/core.rs b/sim/tests/core.rs
index ca91bbb..defe799 100644
--- a/sim/tests/core.rs
+++ b/sim/tests/core.rs
@@ -61,6 +61,7 @@
 
 sim_test!(direct_xip_first, make_no_upgrade_image(&NO_DEPS), run_direct_xip());
 sim_test!(ram_load_first, make_no_upgrade_image(&NO_DEPS), run_ram_load());
+sim_test!(ram_load_split, make_no_upgrade_image(&NO_DEPS), run_split_ram_load());
 
 // Test various combinations of incorrect dependencies.
 test_shell!(dependency_combos, r, {