驱动目录位置不合理，需要调整到/device/qemu/drivers下面

close #I3XW96 #I3XWXD

Change-Id: Ied6b90d2d0631c99f2209f5b72bbd12cdff6b1d5
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>