mpc8308rdb: add support for Spansion SPI flash on header J8

The SPI pins are routed to header J8 for testing SPI functionality. A
Spansion flash has been wired up and tested on this header.

This patch breaks support for the second TSEC interface, since the GPIO
pin used as a chip select is pinmuxed with some of the TSEC pins.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MPC8308RDB.h b/include/configs/MPC8308RDB.h
index 7f2761c..a24538a 100644
--- a/include/configs/MPC8308RDB.h
+++ b/include/configs/MPC8308RDB.h
@@ -340,6 +340,19 @@
 #define CONFIG_SYS_I2C_OFFSET	0x3000
 #define CONFIG_SYS_I2C2_OFFSET	0x3100
 
+/*
+ * SPI on header J8
+ *
+ * WARNING: enabling this will break TSEC2 (connected to the Vitesse switch)
+ * due to a pinmux conflict between GPIO9 (SPI chip select )and the TSEC2 pins.
+ */
+#ifdef CONFIG_MPC8XXX_SPI
+#define CONFIG_CMD_SPI
+#define CONFIG_USE_SPIFLASH
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_SPANSION
+#define CONFIG_CMD_SF
+#endif
 
 /*
  * Board info - revision and where boot from