Resolve Realtek device small code space issue

switch on TCM section usage, this should give user code more codespace.

Author: Archcady

targets/TARGET_Realtek/TARGET_AMEBA/TARGET_RTL8195A/device/TOOLCHAIN_ARM_STD/rtl8195a.sct

@@ -37,6 +37,12 @@ LR_RAM 0x10006000 0x6FFFF  {
   RW_IRAM1 +0 UNINIT FIXED {
    .ANY (+ZI)
   }
+
+  TCM_OVERLAY 0x1FFF0000 0x10000{
+    lwip_mem.o(.bss*)
+    lwip_memp.o(.bss*)
+    *.o(.tcm.heap*)
+  }
 }
 
 LR_DRAM 0x30000000 0x1FFFFF{

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

@@ -827,6 +827,8 @@ SECTIONS
 
     .TCM_overlay :
     {
+        *lwip_mem.o (.bss*)
+        *lwip_memp.o (.bss*)
         *(.tcm.heap*)
     } > TCM
 

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

@@ -208,7 +208,7 @@ place at start of SDRAM_RAM_region {
 
 /* TCM placement */
 define overlay TCM_overlay { 
-									section .tcm.heap,
+                                    section .tcm.heap,
                                     section .bss object lwip_mem.o,
                                     section .bss object lwip_memp.o,
                                     block .heap,

targets/TARGET_Realtek/TARGET_AMEBA/sdk/common/drivers/wlan/realtek/include/autoconf.h

@@ -107,7 +107,7 @@
 
 #if defined(CONFIG_PLATFORM_AMEBA_X)
 	#if !defined(CONFIG_PLATFORM_8711B)
-		#define CONFIG_USE_TCM_HEAP 0					/* USE TCM HEAP */
+		#define CONFIG_USE_TCM_HEAP 1					/* USE TCM HEAP */
 	#endif
 	#define CONFIG_RECV_TASKLET_THREAD
 	#define CONFIG_XMIT_TASKLET_THREAD

targets/TARGET_Realtek/TARGET_AMEBA/sdk/os/os_dep/include/osdep_service.h

@@ -32,7 +32,7 @@ extern "C" {
 
 #if defined(CONFIG_PLATFORM_8195A)
 	#ifndef CONFIG_USE_TCM_HEAP
-	#define CONFIG_USE_TCM_HEAP 0					/* USE TCM HEAP */
+	#define CONFIG_USE_TCM_HEAP 1					/* USE TCM HEAP */
 	#endif
 	#define USE_MUTEX_FOR_SPINLOCK	1
 #endif