pch_can: fix tseg1/tseg2 setting issue

Previous patch "[PATCH 1/3] pch_can: fix 800k comms issue" is wrong.
I should have modified tseg1_min not tseg2_min.
This patch reverts tseg2_min to 1 and set tseg1_min to 2.
Signed-off-by: NTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/can/pch_can.c

@@ -185,9 +185,9 @@ struct pch_can_priv {
 
 static struct can_bittiming_const pch_can_bittiming_const = {
 	.name = KBUILD_MODNAME,
-	.tseg1_min = 1,
+	.tseg1_min = 2,
 	.tseg1_max = 16,
-	.tseg2_min = 2,
+	.tseg2_min = 1,
 	.tseg2_max = 8,
 	.sjw_max = 4,
 	.brp_min = 1,