tegra2: spi: Add SPI driver for Tegra2 SOC

This driver supports SPI on Tegra2, running at 48MHz.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
index 4c29167..6a1312c 100644
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@@ -31,6 +31,7 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/pinmux.h>
 #include <asm/arch/uart.h>
+#include <spi.h>
 #include "board.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -114,6 +115,9 @@
 	clock_init();
 	clock_verify();
 
+#ifdef CONFIG_TEGRA2_SPI
+	spi_init();
+#endif
 	/* boot param addr */
 	gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);