Dynamic cfg: MISRA fixes

Change-Id: I1d85b76af002b8b672fcaeca94939b7420bc8243
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/common/desc_image_load.c b/common/desc_image_load.c
index 147dfbf..672b80b 100644
--- a/common/desc_image_load.c
+++ b/common/desc_image_load.c
@@ -202,7 +202,7 @@
 	uintptr_t hw_config_base = 0, fw_config_base;
 	bl_mem_params_node_t *mem_params;
 
-	assert(bl2_to_next_bl_params);
+	assert(bl2_to_next_bl_params != NULL);
 
 	/*
 	 * Get the `bl_mem_params_node_t` corresponding to HW_CONFIG