Fix build error for aarch64 big endian.

Modified rev to rev64, because rev only takes integer registers.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90827
Otherwise, the following error will occur.

Error: operand 1 must be an integer register -- `rev v31.16b,v31.16b'

CLA: trivial
Signed-off-by: NLei Maohui <leimaohui@cn.fujitsu.com>
Reviewed-by: NShane Lontis <shane.lontis@oracle.com>
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9151)

(cherry picked from commit 7b0fceed21c8929e0c6694f57018aa1dbba03e15)

crypto/sha/asm/keccak1600-armv8.pl

@@ -738,7 +738,7 @@ $code.=<<___;
 	blo	.Lprocess_block_ce
 	ldr	d31,[$inp],#8		// *inp++
 #ifdef	__AARCH64EB__
-	rev	v31.16b,v31.16b
+	rev64	v31.16b,v31.16b
 #endif
 	eor	$A[$j/5][$j%5],$A[$j/5][$j%5],v31.16b
 	beq	.Lprocess_block_ce
@@ -747,7 +747,7 @@ ___
 $code.=<<___;
 	ldr	d31,[$inp],#8		// *inp++
 #ifdef	__AARCH64EB__
-	rev	v31.16b,v31.16b
+	rev64	v31.16b,v31.16b
 #endif
 	eor	$A[4][4],$A[4][4],v31.16b