Fix non-portable u_int64_t

kernel/x86_64/sbgemm_ncopy_16_cooperlake.c

@@ -135,7 +135,7 @@ int CNAME(BLASLONG m, BLASLONG n, IFLOAT *a, BLASLONG lda, IFLOAT *b){
 		0x0, 0x1, 0x2, 0x3, 0x10, 0x11, 0x12, 0x13, 0x8, 0x9, 0xa, 0xb, 0x18, 0x19, 0x1a, 0x1b,
 		0x4, 0x5, 0x6, 0x7, 0x14, 0x15, 0x16, 0x17, 0xc, 0xd, 0xe, 0xf, 0x1c, 0x1d, 0x1e, 0x1f,
 	};
-	u_int64_t permute_table2[] = {
+	uint64_t permute_table2[] = {
 		0x00, 0x01, 0x02, 0x03, 8|0x0, 8|0x1, 8|0x2, 8|0x3,
 		0x04, 0x05, 0x06, 0x07, 8|0x4, 8|0x5, 8|0x6, 8|0x7,
 	};