arch: arc: update the ARC port

* remove unused codes and definition

Signed-off-by: Jingru <jingru@synopsys.com>

arch/arc/common/include/tos_fault.h

@@ -20,17 +20,7 @@
 
 #if TOS_CFG_FAULT_BACKTRACE_EN > 0u
 
-typedef int (*k_fault_log_writer_t)(const char *format, ...);
-
-#define K_FAULT_STACK_DUMP_DEPTH                10u
-
-#define K_FAULT_CALL_STACK_BACKTRACE_DEPTH          5u
-
-__API__ void tos_fault_log_writer_set(k_fault_log_writer_t log_writer);
-
-__KERNEL__ int fault_default_log_writer(const char *format, ...);
-
-__KERNEL__ void fault_backtrace(cpu_addr_t lr, fault_exc_frame_t *frame);
+#error "unsupport now"
 
 #endif
 

arch/arc/common/tos_cpu.c

@@ -260,7 +260,3 @@ __KNL__ k_err_t cpu_task_stack_draught_depth(k_stack_t *stk_base, size_t stk_siz
 }
 
 #endif
-
-#if TOS_CFG_FAULT_BACKTRACE_EN > 0u
-
-#endif /* TOS_CFG_FAULT_BACKTRACE_EN */

arch/arc/common/tos_embarc.c

@@ -53,4 +53,4 @@ int main(void)
     osThreadCreate(osThread(application_entry), NULL);
     /* start kernel */
     osKernelStart();
-}
+}