bsps/arm: Invalidate branch predictors earlier

Make sure the branch predictors are invalidated before the first branch
is executed.

Update #4202.

bsps/arm/raspberrypi/start/bspstarthooks.c

@@ -110,7 +110,6 @@ void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
     rtems_cache_invalidate_entire_data();
   }
   rtems_cache_invalidate_entire_instruction();
-  arm_cp15_branch_predictor_invalidate_all();
   arm_cp15_tlb_invalidate();
   arm_cp15_flush_prefetch_buffer();