TI: armv7: Move ELM support to SoC configuration file.

The ELM hardware engine wihich is used for ECC error detections is not present
on OMAP3 SoC, so move the CONFIG_SPL_NAND_AM33XX_BCH from ti_armv7_common.h to
SoC configuration file.

Signed-off-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Reviewed-by:  Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/include/configs/ti_omap5_common.h b/include/configs/ti_omap5_common.h
index 4f34dcf..7b10fbd 100644
--- a/include/configs/ti_omap5_common.h
+++ b/include/configs/ti_omap5_common.h
@@ -146,4 +146,8 @@
 #define CONFIG_SPL_DISPLAY_PRINT
 #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"
 
+#ifdef CONFIG_NAND
+#define CONFIG_SPL_NAND_AM33XX_BCH	/* ELM support */
+#endif
+
 #endif /* __CONFIG_TI_OMAP5_COMMON_H */