nand_spl_simple: add support for software ECC

This patch adds support for software ECC to the nand_spl_simple driver.
To enable this one have to define CONFIG_SPL_NAND_SOFTECC.

Tested on OMAP3.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Acked-by: Scott Wood <scottwood@freescale.com>
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index 52bc916..81f0e08 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -50,7 +50,7 @@
  * only nand_correct_data() is needed
  */
 
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) || defined(CONFIG_SPL_NAND_SOFTECC)
 /*
  * Pre-calculated 256-way 1 byte column parity
  */