NAND: add NAND driver for S3C64XX

Based on the original S3C64XX NAND driver by Samsung for U-Boot 1.1.6.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 1923310..b0abe6e 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -37,6 +37,7 @@
 
 COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_nand.o
 COBJS-$(CONFIG_NAND_FSL_UPM) += fsl_upm.o
+COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o
 endif
 
 COBJS	:= $(COBJS-y)