powerpc/5200: Add mpc5200-spi (non-PSC) device driver

Adds support for the dedicated SPI device on the Freescale MPC5200(b)
SoC.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

include/linux/spi/mpc52xx_spi.h

@@ -0,0 +1,10 @@
+
+#ifndef INCLUDE_MPC5200_SPI_H
+#define INCLUDE_MPC5200_SPI_H
+
+extern void mpc52xx_spi_set_premessage_hook(struct spi_master *master,
+					    void (*hook)(struct spi_message *m,
+							 void *context),
+					    void *hook_context);
+
+#endif