Merge pull request #458 from soby-mathew/sm/rem_tzc_base_assert

Remove the assert for TZC base during initialization

drivers/arm/tzc400/tzc400.c

@@ -170,9 +170,6 @@ void tzc_init(uintptr_t base)
 
 	assert(base);
 
-	/* Assert if already initialised */
-	assert(!tzc.base);
-
 	tzc.base = base;
 
 	/*