toolchain file variable is global scope
dont need set parent scope
clear warning:
CMake Warning (dev) at /github/workspace/sources/nuttx/arch/arm/src/cmake/gcc.cmake:69 (set):
Cannot set "GCCVER": current scope has no parent.
Call Stack (most recent call first):
/github/workspace/sources/nuttx/arch/arm/src/cmake/Toolchain.cmake:56 (include)
/github/workspace/sources/nuttx/build/CMakeFiles/3.26.0/CMakeSystem.cmake:6 (include)
/github/workspace/sources/nuttx/build/CMakeFiles/CMakeScratch/TryCompile-ZJVOZO/CMakeLists.txt:5 (project)
This warning is for project developers. Use -Wno-dev to suppress it.
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>