fix the issue that GCC builds extra-large bin file

also a minor fix to IAR icf file

Author: Archcady

targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_GCC_ARM/rlx8195A-symbol-v02-img2.ld

@@ -2,7 +2,6 @@
 
 ENTRY(Reset_Handler)
 
-/*INCLUDE "mbed-os/targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_GCC_ARM/export-rom_v02.txt"*/
 SECTIONS
 {
     __vectors_table = 0x0;
@@ -804,6 +803,7 @@ SECTIONS
         __HeapLimit = .;
     } > BD_RAM
 
+	/*
     .TCM_overlay :
     {
         *(.tcm.heap*)
@@ -836,7 +836,7 @@ SECTIONS
 	    *(.websocket.bss*)
 	    __sdram_bss_end__ = .;
 	  } > SD_RAM
-	  
+	  */
     /* .stack_dummy section doesn't contains any symbols. It is only
      * used for linker to calculate size of stack sections, and assign
      * values to stack symbols later */

targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_IAR/rtl8195a.icf

@@ -36,7 +36,7 @@ do not initialize  { section .noinit };
 /****************************************
  * ROM Section config                   *
  ****************************************/
-keep { section .rom };
+//keep { section .rom };
 //place at start of ROM_region   { readonly, section .rom };
 place at start of ROM_region   {section .rom };
 
@@ -85,8 +85,8 @@ define block .ram_image1.data with fixed order{ section .image1.validate.rodata*
 //                                                };
 
 define block .ram_image1.text with fixed order{ section .hal.ram.text*,
-                                                section .hal.sdrc.text*,
-                                                //section .text* object startup.o,
+//                                                //section .hal.sdrc.text*,
+//                                                //section .text* object startup.o,
                                                 section .infra.ram.text*,
                                                 };
 
@@ -154,7 +154,7 @@ define block .ram.bss with fixed order{ section .bss*,
 
 place at start of BD_RAM_region   {
 								block IMAGE2,
-								readwrite,
+								//readwrite,
 								block .ram.bss,
                         		};
 place at end of BD_RAM_region{