For the NuttX platform, the system call numbers themselves
are independent of the architecture(arm/x86/risc-v).
Therefore, there is no need to consider the differences
between different architectures(arm/x86/risc-v).
As a result, we can directly maintain them manually instead
of relying on the regen.sh script to generate them
dynamically. This makes it easier for maintenance, upgrading,
and modification.
Signed-off-by: guoshichao <guoshichao@xiaomi.com>