arm: ls1021a: Add sata support on qds and twr board

Freescale ARM-based Layerscape LS102xA contain a SATA controller
which comply with the serial ATA 3.0 specification and the
AHCI 1.3 specification.
This patch adds SATA feature on ls1021aqds and ls1021atwr boards.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/arm/include/asm/arch-ls102xa/ls102xa_sata.h b/arch/arm/include/asm/arch-ls102xa/ls102xa_sata.h
new file mode 100644
index 0000000..d097a6a
--- /dev/null
+++ b/arch/arm/include/asm/arch-ls102xa/ls102xa_sata.h
@@ -0,0 +1,11 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __FSL_SATA_H_
+#define __FSL_SATA_H_
+
+int ls1021a_sata_init(void);
+#endif