improve gcc-clean target
treebcc2b7d157098c573115262fd17fb920d5a9fa99
-rw-r--r-- 1816 .defconfig
-rw-r--r-- 142 .gitignore
-rw-r--r-- 6134 Config.in
-rw-r--r-- 13970 Makefile
-rw-r--r-- 432 TODO
drwxr-xr-x - docs
drwxr-xr-x - package
drwxr-xr-x - project
drwxr-xr-x - target
drwxr-xr-x - toolchain