ad4050lz: fix gcc copy table and zero table missing

Author: 0xc0170

targets/TARGET_Analog_Devices/TARGET_ADUCM4X50/TARGET_ADUCM4050/TARGET_EV_COG_AD4050LZ/device/startup_ADuCM4050.h

@@ -102,6 +102,10 @@ extern uint32_t Load$$LR$$LR_IROM1$$Base[];
 extern uint32_t __etext;
 extern uint32_t __data_start__;
 extern uint32_t __data_end__;
+extern uint32_t __copy_table_start__;
+extern uint32_t __copy_table_end__;
+extern uint32_t __zero_table_start__;
+extern uint32_t __zero_table_end__;
 extern uint32_t __bss_start__;
 extern uint32_t __bss_end__;
 extern uint32_t __StackTop;