can-calc-bit-timing: mcp251x: replace 16MHz refclock by 10MHz

The mcp251x uses half of the external OSC rate as CAN clock. In real world
applications external OSC with a clock of 16MHz or 20MHz are used. Adjust the
example ref clocks accordingly.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

can-calc-bit-timing.c

@@ -329,7 +329,7 @@ static struct calc_bittiming_const can_calc_consts[] = {
 		},
 		.ref_clk = {
 			{ .clk =  8000000, },
-			{ .clk = 16000000, },
+			{ .clk = 10000000, },
 		},
 		.printf_btr = printf_btr_mcp251x,
 	}, {