s390/sysinfo: allow response buffer in normal memory

As provided with commit cd4386a9 ("s390/cpcmd,vmcp: avoid GFP_DMA
allocations") the Diagnose Code 8 response buffer does not have to be
below 2GB.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/kernel/sysinfo.c

@@ -397,7 +397,7 @@ static void service_level_vm_print(struct seq_file *m,
 {
 	char *query_buffer, *str;
 
-	query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
+	query_buffer = kmalloc(1024, GFP_KERNEL);
 	if (!query_buffer)
 		return;
 	cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);