net: keystone_net: add Keystone2 K2E SoC support

The Keystone2 Edison SoC uses the same keystone net driver.
This patch adds opportunity to use it by K2E SoCs.

Acked-by: Vitaly Andrianov <vitalya@ti.com>
Acked-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>

arch/arm/include/asm/arch-keystone/hardware-k2e.h

@@ -61,4 +61,7 @@
 #define KS2_NETCP_PDMA_RX_RCV_QUEUE	4002
 #define KS2_NETCP_PDMA_TX_SND_QUEUE	896
 
+/* NETCP */
+#define KS2_NETCP_BASE			0x24000000
+
 #endif

drivers/net/keystone_net.c

@@ -289,6 +289,11 @@ int mac_sl_config(u_int16_t port, struct mac_sl_cfg *cfg)
 	writel(cfg->max_rx_len, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_MAXLEN);
 	writel(cfg->ctl, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_CTL);
 
+#ifdef CONFIG_K2E_EVM
+	/* Map RX packet flow priority to 0 */
+	writel(0, DEVICE_EMACSL_BASE(port) + CPGMACSL_REG_RX_PRI_MAP);
+#endif
+
 	return ret;
 }