feat: 支持uts容器

BREAKING CHANGE:
支持uts容器对外变更:
支持sethostname

Close #I6A7C8

Signed-off-by: zhushengle <zhushengle@huawei.com>
Change-Id: I2504f77c37bb4149861673c81688bd112563c24b

syscall/los_syscall.h

@@ -177,6 +177,9 @@ extern int SysShmCtl(int shmid, int cmd, struct shmid_ds *buf);
 extern int SysShmDt(const void *shmaddr);
 
 /* misc */
+#ifdef LOSCFG_UTS_CONTAINER
+extern int SysSetHostName(const char *name, size_t len);
+#endif
 extern int SysUname(struct utsname *name);
 extern int SysInfo(struct sysinfo *info);