1.内核打印的地方支持异常时重定向打印信息
2.excinfo 命令中申请的内存64对齐
Close #I482S5
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I4e8a971cc5b14f62d573bb160682089d9d50e64e

当console层的打印缓冲buffer满且打印任务被饿死时，函数ConsoleOutput会出现在for循环中
不退出的情况，导致中断打印时卡死

close: #I4C9GC
Signed-off-by: Nzff <zhangfanfan2@huawei.com>
Change-Id: I70b9d7c848dce7d351c5679e7b08049df27a6f10

1. 原kernel/common目录下属于内核拓展组件，统一移入kernel/extend管理
2. Kconfig分层，各模块自己的配置放到自己目录下管理
3. 原platform下不属于平台的公共代码抽到kernel/common下，只留板级链接脚本和一些编译脚本指向device目录下触发平台相关的编译
4. 对外公共头文件统一抽到对外include路径
5. 废弃宏，头文件清理

close: #I48KI4
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I0cf5ea81c92a8fa7b113da9cbdc8b7bc935f5aae

add BUILD.gn for all kernel modules
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I018446427bf64615f2596d47862b219659b58b34

support turn off as many features as possible.
current only libc and posix and bsd can not be turned off.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I1e97570c67593207a56dc11f357eca4b4a018bfd

storage medium is separated from the shell module.

Change-Id: Id56939001d70bb92d9cc02bd7c9f55ca8b61cf5b

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86