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>

arch/cris/include/asm/Kbuild

 generic-y += atomic.h
+generic-y += auxvec.h
 generic-y += barrier.h
 generic-y += bitsperlong.h
 generic-y += clkdev.h

arch/cris/include/uapi/asm/auxvec.h

-#ifndef __ASMCRIS_AUXVEC_H
-#define __ASMCRIS_AUXVEC_H
-
-#endif