s390x assembly pack: fix msa3 stfle bit detection

Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from openssl#10004)

crypto/s390xcpuid.pl

@@ -109,7 +109,7 @@
 	la	%r1,S390X_KMAC(%r4)
 	.long	0xb91e0042		# kmac %r4,%r2
 
-	tmhh	%r3,0x0003		# check for message-security-assist-3
+	tmhh	%r3,0x0008		# check for message-security-assist-3
 	jz	.Lret
 
 	lghi	%r0,S390X_QUERY		# query pcc capability vector