The version of posix_fallocate() patched into elfutils
for macOS using code from Mozilla is now patched into gnulib.
Import the fallocate-posix module and always link
the corresponding object to libraries whenever it is built.
Signed-off-by: Michael Pratt <mcpratt@pm.me>
Link: https://github.com/openwrt/openwrt/pull/15690
Signed-off-by: Robert Marko <robimarko@gmail.com>