This reverts commit 848d1ef0b7.
It doesn't make sense because the generated file just have names of
symbols as strings. Nothing to worry about builtins.
let the nuttx print out symbolic crash information and
symbolic stack backtraces. This increases the size of the nuttx
somewhat, as all symbols have to be loaded into the nuttx image.
Signed-off-by: chao.an <anchao@xiaomi.com>
