spi: omap3: Make local functions as static

Attach static on local defined functions.

Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>

drivers/spi/omap3_spi.c

@@ -306,8 +306,8 @@ void spi_release_bus(struct spi_slave *slave)
 	spi_reset(ds);
 }
 
-int omap3_spi_write(struct spi_slave *slave, unsigned int len, const void *txp,
-		    unsigned long flags)
+static int omap3_spi_write(struct spi_slave *slave, unsigned int len,
+			   const void *txp, unsigned long flags)
 {
 	struct omap3_spi_slave *ds = to_omap3_spi(slave);
 	int i;
@@ -360,8 +360,8 @@ int omap3_spi_write(struct spi_slave *slave, unsigned int len, const void *txp,
 	return 0;
 }
 
-int omap3_spi_read(struct spi_slave *slave, unsigned int len, void *rxp,
-		   unsigned long flags)
+static int omap3_spi_read(struct spi_slave *slave, unsigned int len,
+			  void *rxp, unsigned long flags)
 {
 	struct omap3_spi_slave *ds = to_omap3_spi(slave);
 	int i;
@@ -414,8 +414,8 @@ int omap3_spi_read(struct spi_slave *slave, unsigned int len, void *rxp,
 }
 
 /*McSPI Transmit Receive Mode*/
-int omap3_spi_txrx(struct spi_slave *slave, unsigned int len,
-		   const void *txp, void *rxp, unsigned long flags)
+static int omap3_spi_txrx(struct spi_slave *slave, unsigned int len,
+			  const void *txp, void *rxp, unsigned long flags)
 {
 	struct omap3_spi_slave *ds = to_omap3_spi(slave);
 	ulong start;