CRIS: UAPI: use generic socket.h

CRIS' socket.h is equivalent to the asm-generic version.

Effective diff:

 -#ifndef _ASM_SOCKET_H
 -#define _ASM_SOCKET_H
 -
 -
 +#ifndef __ASM_GENERIC_SOCKET_H
 +#define __ASM_GENERIC_SOCKET_H

  #include <asm/sockios.h>

  #define SO_LINGER	13
  #define SO_BSDCOMPAT	14
  #define SO_REUSEPORT	15
 +#ifndef SO_PASSCRED
  #define SO_PASSCRED	16
  #define SO_PEERCRED	17
  #define SO_RCVLOWAT	18
  #define SO_SNDLOWAT	19
  #define SO_RCVTIMEO	20
  #define SO_SNDTIMEO	21
 +#endif

 #define SO_SECURITY_AUTHENTICATION		22

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>