add more errno constants to uclibc
add more errno constants to uclibc

Add more errno constants as requested by rustc since commit
1ec9454403e9bb0361d0725524c4bd27030474cc (for a discussion of the
change, see https://github.com/rust-lang/rust/pull/79965).

The constant values and descriptions were taken from
include/uapi/asm-generic/errno.h in the Linux kernel, since "uClibc will
be compiled to match the interfaces available in the provided version of
the Linux kernel headers".

While the fork of uClibc in L4Re nominally has its own errno constants,
they appear to be based on the Linux header file and thus are the same.

rust-lang/libc,rust-lang/libc,rust-lang/libc