[bluetrum] fix formatting issues

bsp/bluetrum/ab32vg1-ab-prougen/applications/blehr_app.c

@@ -64,7 +64,7 @@ static int blehr_sample(void)
         1024,
         15,
         1);
-    
+
     if (tid != RT_NULL) {
         rt_thread_startup(tid);
     }

bsp/bluetrum/ab32vg1-ab-prougen/board/board.c

@@ -145,11 +145,6 @@ void rt_hw_board_init(void)
 #endif
 }
 
-void rt_hw_us_delay(rt_uint32_t us)
-{
-
-}
-
 RT_SECTION(".irq.cache")
 void cache_init(void)
 {

bsp/bluetrum/ab32vg1-ab-prougen/link.lds

@@ -23,7 +23,7 @@ MEMORY
     flash(rx)       : org = __base + 512,       len = __max_flash_size
     comm(rx)        : org = __comm_vma,         len = __comm_ram_size
 
-    bram			: org = __bram_vma,         len = __ble_ram_size
+    bram            : org = __bram_vma,         len = __ble_ram_size
     data            : org = __data_vma,         len = __data_ram_size
     stack           : org = __stack_vma,        len = __stack_ram_size
     heap            : org = __heap_vma,         len = __heap_ram_size