net/compat: Merge multiple implementations of ifreq::ifr_data conversion
net/compat: Merge multiple implementations of ifreq::ifr_data conversion

Signed-off-by: Ben Hutchings <0672176982fbc629cc374f31a7a45ae1671abf90@solarflare.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs