net: stmmac: unify registers dumps methods

The stmmac driver have two methods for registers dumps: via ethtool and
at init (if NETIF_MSG_HW is enabled).

It is better to keep only one method, ethtool, since the other was ugly.

This patch convert all dump_regs() function from "printing regs" to
"fill the reg_space used by ethtool".

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 144fe84..04d9245 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -416,7 +416,7 @@ struct stmmac_dma_ops {
 	/* Configure the AXI Bus Mode Register */
 	void (*axi)(void __iomem *ioaddr, struct stmmac_axi *axi);
 	/* Dump DMA registers */
-	void (*dump_regs) (void __iomem *ioaddr);
+	void (*dump_regs)(void __iomem *ioaddr, u32 *reg_space);
 	/* Set tx/rx threshold in the csr6 register
 	 * An invalid value enables the store-and-forward mode */
 	void (*dma_mode)(void __iomem *ioaddr, int txmode, int rxmode,
@@ -456,7 +456,7 @@ struct stmmac_ops {
 	/* Enable RX Queues */
 	void (*rx_queue_enable)(struct mac_device_info *hw, u32 queue);
 	/* Dump MAC registers */
-	void (*dump_regs)(struct mac_device_info *hw);
+	void (*dump_regs)(struct mac_device_info *hw, u32 *reg_space);
 	/* Handle extra events on specific interrupts hw dependent */
 	int (*host_irq_status)(struct mac_device_info *hw,
 			       struct stmmac_extra_stats *x);