Typedef for __kernel_sa_family_t in _fake_typedefs.h

This typedef that exists in the real `linux/socket.h` is masked by the
`fake_libc_include` hierarchy. Having it in place allows to successfully
parse a large number of Linux kernel headers necessary for netlink
operations. This is very useful for Python projects that communicate
with the kernel over netlink socket. In particular, this project:

https://github.com/ionos-cloud/netlinklib/tree/main/netlinklib

plans to use pyparser for parsing strcts defined in the kernel headers.

Signed-off-by: Eugene Crosser <crosser@average.org>

Author: crosser-ionos

utils/fake_libc_include/_fake_typedefs.h

@@ -231,5 +231,6 @@ typedef enum memory_order {
   memory_order_acq_rel,
   memory_order_seq_cst
 } memory_order;
+typedef unsigned short __kernel_sa_family_t;
 
 #endif