SPI regestration in Linux Kernel

Hi,

I am doing a project which needs one spi out and it will be connected to a slave chip,. My board is pandaboard, and I compiled uboot and 3.2 linux kernel, now it is working. But the problem now is when I went to the file of Boad_omap4panda.c under the folder arch/arm/mach-omap2, and did the following changes, there is no /dev/spi things like that meaning that I am not able to access it. Could someone help me ?? thanks

#include <plat/mcspi.h>
#include <linux/spi/spi.h>

static struct spi_board_info panda_spi_board_info[] __initdata = { 
	{ 
		.modalias = "testtttt", 
		.bus_num = 1, 
		.chip_select = 0, 
		.max_speed_hz = 24000000, 
		.mode = SPI_MODE_1, 
		.irq    = -1, 

	}, 
}; 

spi_register_board_info(panda_spi_board_info, 
				    ARRAY_SIZE(panda_spi_board_info));   //this function is called in the omap4_panda_init