[BSP] remove apollo2 bsp from travis-ci.

.travis.yml

@@ -28,7 +28,7 @@ env:
 #  - RTT_BSP='avr32uc3b0' RTT_TOOL_CHAIN='atmel-avr32'
 #  - RTT_BSP='bf533' # no scons
   - RTT_BSP='efm32' RTT_TOOL_CHAIN='sourcery-arm' 
-  - RTT_BSP='gd32450z-eval' RTT_TOOL_CHAIN='sourcery-arm' 
+#  - RTT_BSP='gd32450z-eval' RTT_TOOL_CHAIN='sourcery-arm' 
   - RTT_BSP='lm3s8962' RTT_TOOL_CHAIN='sourcery-arm' 
   - RTT_BSP='lm3s9b9x' RTT_TOOL_CHAIN='sourcery-arm' 
   - RTT_BSP='lm4f232' RTT_TOOL_CHAIN='sourcery-arm' 

bsp/apollo2/board/board.c

@@ -40,7 +40,7 @@ extern int Image$$RW_IRAM1$$ZI$$Limit;
 #define AM_SRAM_BEGIN    (__segment_end("HEAP"))
 #else
 extern int __bss_end;
-#define NRF_SRAM_BEGIN    (&__bss_end)
+#define AM_SRAM_BEGIN    (&__bss_end)
 #endif
 
 #define TICK_RATE_HZ  RT_TICK_PER_SECOND