ARM: Orion5x: Fix warnings when using C=1.

Add missing include files, missing static keyword, and use NULL instead
of 0, in order to fix warnings when compiling with C=1.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-orion5x/common.c

@@ -135,7 +135,7 @@ void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
 /*****************************************************************************
  * SPI
  ****************************************************************************/
-void __init orion5x_spi_init()
+void __init orion5x_spi_init(void)
 {
 	orion_spi_init(SPI_PHYS_BASE);
 }
@@ -185,7 +185,7 @@ static void __init orion5x_crypto_init(void)
 /*****************************************************************************
  * Watchdog
  ****************************************************************************/
-void __init orion5x_wdt_init(void)
+static void __init orion5x_wdt_init(void)
 {
 	orion_wdt_init();
 }
@@ -246,7 +246,7 @@ void orion5x_setup_wins(void)
 
 int orion5x_tclk;
 
-int __init orion5x_find_tclk(void)
+static int __init orion5x_find_tclk(void)
 {
 	u32 dev, rev;