arm: bcm281xx: Add Ethernet Clock support

Enable Ethernet clock when Broadcom StarFighter2 Ethernet block
(CONFIG_BCM_SF2_ETH) is enabled.

Signed-off-by: Jiandong Zheng <jdzheng@broadcom.com>
Signed-off-by: Steve Rae <srae@broadcom.com>
diff --git a/arch/arm/include/asm/arch-bcm281xx/sysmap.h b/arch/arm/include/asm/arch-bcm281xx/sysmap.h
index 880b4e0..350e7f6 100644
--- a/arch/arm/include/asm/arch-bcm281xx/sysmap.h
+++ b/arch/arm/include/asm/arch-bcm281xx/sysmap.h
@@ -9,6 +9,9 @@
 #define BSC1_BASE_ADDR		0x3e016000
 #define BSC2_BASE_ADDR		0x3e017000
 #define BSC3_BASE_ADDR		0x3e018000
+#define DWDMA_AHB_BASE_ADDR	0x38100000
+#define ESUB_CLK_BASE_ADDR	0x38000000
+#define ESW_CONTRL_BASE_ADDR	0x38200000
 #define GPIO2_BASE_ADDR		0x35003000
 #define KONA_MST_CLK_BASE_ADDR	0x3f001000
 #define KONA_SLV_CLK_BASE_ADDR	0x3e011000