ARM: OMAP2+: nand: unify init functions

Helper function for updating nand platform data has been
added the capability to take timing structure arguement.
Usage of omap_nand_flash_init() has been replaced by modifed
one, omap_nand_flash_init was doing things similar to
board_nand_init except that NAND CS# were being acquired
based on bootloader setting. As CS# is hardwired for a given
board, acquiring gpmc CS# has been removed, and updated with
the value on board.

NAND CS# used in beagle board & omap3evm was found to be CS0.
Thomas Weber <thomas.weber.linux@googlemail.com> reported
that value of devkit8000 to be CS0. Overo board was found
to be using CS0 based on u-boot, while google grep says
omap3touchbook too has CS0.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Reviewed-by: Jon Hunter <jon-hunter@ti.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index b700685..e2cf0f7 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -55,8 +55,11 @@
 #include "mux.h"
 #include "sdram-micron-mt46h32m32lf-6.h"
 #include "hsmmc.h"
+#include "board-flash.h"
 #include "common-board-devices.h"
 
+#define	NAND_CS			0
+
 #define OVERO_GPIO_BT_XGATE	15
 #define OVERO_GPIO_W2W_NRESET	16
 #define OVERO_GPIO_PENDOWN	114
@@ -495,8 +498,8 @@
 	omap_serial_init();
 	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 				  mt46h32m32lf6_sdrc_params);
-	omap_nand_flash_init(0, overo_nand_partitions,
-			     ARRAY_SIZE(overo_nand_partitions));
+	board_nand_init(overo_nand_partitions,
+			ARRAY_SIZE(overo_nand_partitions), NAND_CS, 0, NULL);
 	usb_musb_init(NULL);
 	usbhs_init(&usbhs_bdata);
 	overo_spi_init();