CRIS: UAPI: use generic auxvec.h

CRIS's auxvec.h is empty just like the asm-generic version.

Effective diff:

 -#ifndef __ASMCRIS_AUXVEC_H
 -#define __ASMCRIS_AUXVEC_H
 +#ifndef __ASM_GENERIC_AUXVEC_H
 +#define __ASM_GENERIC_AUXVEC_H
 +

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