sh_eth: Fix access to TRSCER register

TRSCER register is configured differently by SoCs. TRSCER of R-Car Gen2 is
RINT8 bit only valid, other bits are reserved bits. This removes access to
TRSCER register reserve bit by adding variable trscer_err_mask to
sh_eth_cpu_data structure, set the register information to each SoCs.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
index 22301bf..71f5de1 100644
--- a/drivers/net/ethernet/renesas/sh_eth.h
+++ b/drivers/net/ethernet/renesas/sh_eth.h
@@ -369,6 +369,8 @@
 	DESC_I_RINT1 = 0x0001,
 };
 
+#define DEFAULT_TRSCER_ERR_MASK (DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2)
+
 /* RPADIR */
 enum RPADIR_BIT {
 	RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
@@ -470,6 +472,9 @@
 	unsigned long tx_check;
 	unsigned long eesr_err_check;
 
+	/* Error mask */
+	unsigned long trscer_err_mask;
+
 	/* hardware features */
 	unsigned long irq_flags; /* IRQ configuration flags */
 	unsigned no_psr:1;	/* EtherC DO NOT have PSR */