libtirpc: create the symbol link for rpc header files
Since the Sun RPC is deprecated in glibc, the rpc header files
are not provided any more, but it allows alternative RPC
implementations, such as TIRPC or rpcsvc-proto, to be used.
So we create the symbol link for rpc header files for tirpc to
be more compatible with the glibc version and the application usage.
Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>