driver/ldpaa_eth: Add LDPAA Ethernet driver

LDPAA Ethernet driver is a freescale's new ethernet driver based on
Layerscape architecture.

Every ethernet driver controls on DPNI object. Where all DPNIs share
one common DPBP and DPIO object to support  Rx and Tx flows.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
CC: Cristian Sovaiala <cristian.sovaiala@freescale.com>
CC: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
CC: J. German Rivera <German.Rivera@freescale.com>
[York Sun: s/NetReceive/net_process_received_packet]
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h
index 0217582..1d2a7fa 100644
--- a/arch/arm/include/asm/arch-fsl-lsch3/config.h
+++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h
@@ -10,6 +10,12 @@
 #include <fsl_ddrc_version.h>
 
 #define CONFIG_SYS_PAGE_SIZE		0x10000
+
+#ifndef L1_CACHE_BYTES
+#define L1_CACHE_SHIFT		6
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#endif
+
 #define CONFIG_MP
 #define CONFIG_SYS_FSL_OCRAM_BASE	0x18000000	/* initial RAM */
 /* Link Definitions */