编译失败，提示diffutils错误

[guoguo-jiabin]

WARNING: Buildfile specified, dependencies will not be handled. If this is not what you want, do not use -b / --buildfile.
DEBUG: Processing core in collection list
DEBUG: Processing meta-loongarch in collection list
DEBUG: collecting .bb files
ERROR: Unable to find any recipe file matching 'meta-loongarch/recipes-extended/diffutils/diffutils_3.9.bbappend'

Summary: There was 1 WARNING message.
Summary: There was 1 ERROR message, returning a non-zero exit code.

[loongson-zjl]

这个提交改了，更新下试试。#13