am33xx: Add support, update omap3 McSPI driver

Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index 9346c0b..47f9e56 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -86,15 +86,21 @@
 	case 0:
 		ds->regs = (struct mcspi *)OMAP3_MCSPI1_BASE;
 		break;
+#ifdef OMAP3_MCSPI2_BASE
 	case 1:
 		ds->regs = (struct mcspi *)OMAP3_MCSPI2_BASE;
 		break;
+#endif
+#ifdef OMAP3_MCSPI3_BASE 
 	case 2:
 		ds->regs = (struct mcspi *)OMAP3_MCSPI3_BASE;
 		break;
+#endif
+#ifdef OMAP3_MCSPI4_BASE
 	case 3:
 		ds->regs = (struct mcspi *)OMAP3_MCSPI4_BASE;
 		break;
+#endif
 	default:
 		printf("SPI error: unsupported bus %i. \
 			Supported busses 0 - 3\n", bus);
diff --git a/drivers/spi/omap3_spi.h b/drivers/spi/omap3_spi.h
index 0ac801c..bffa43c 100644
--- a/drivers/spi/omap3_spi.h
+++ b/drivers/spi/omap3_spi.h
@@ -30,10 +30,15 @@
 #ifndef _OMAP3_SPI_H_
 #define _OMAP3_SPI_H_
 
+#ifdef CONFIG_AM33XX
+#define OMAP3_MCSPI1_BASE	0x48030100
+#define OMAP3_MCSPI2_BASE	0x481A0100
+#else
 #define OMAP3_MCSPI1_BASE	0x48098000
 #define OMAP3_MCSPI2_BASE	0x4809A000
 #define OMAP3_MCSPI3_BASE	0x480B8000
 #define OMAP3_MCSPI4_BASE	0x480BA000
+#endif
 
 #define OMAP3_MCSPI_MAX_FREQ	48000000