spi_s3c24xx: really assign busnum

The original "Pass the bus number we expect the S3C24XX SPI driver to
attach to via the platform data." [1] patch was mis-sent, and missed two
important parts of the diff, which was to actually set the bus_num field
and add the relevant field to the platform data.

The previous commit 50f426b55d promised to
add a bus_num field, but failed to include the two hunks that added this
field to include/asm-arm/arch-s3c2410/spi.h and then pass it to the spi
core when creating the new master field in drivers/spi/spi_s3c24xx.c.

[1] git commit 50f426b55d

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/spi/spi_s3c24xx.c

@@ -270,6 +270,7 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
 	/* setup the master state. */
 
 	master->num_chipselect = hw->pdata->num_cs;
+	master->bus_num = pdata->bus_num;
 
 	/* setup the state for the bitbang driver */
 

include/asm-arm/arch-s3c2410/spi.h

@@ -16,6 +16,7 @@
 struct s3c2410_spi_info {
 	unsigned long		 pin_cs;	/* simple gpio cs */
 	unsigned int		 num_cs;	/* total chipselects */
+	int			 bus_num;       /* bus number to use. */
 
 	void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol);
 };