bsps/sparc/leon2: Address unused parameter warnings

Add "(void) param;" annotation to address unused parameter warnings.
Found with GCC's warning -Wunused-parameter.

bsps/sparc/leon2/console/console.c

@@ -307,6 +307,9 @@ rtems_device_driver console_initialize(
   void                      *arg
 )
 {
+  (void) minor;
+  (void) arg;
+
   rtems_status_code status;
 
   rtems_termios_initialize();
@@ -393,6 +396,10 @@ rtems_device_driver console_close(
   void                    * arg
 )
 {
+  (void) major;
+  (void) minor;
+  (void) arg;
+
   return rtems_termios_close (arg);
 }
 
@@ -402,6 +409,10 @@ rtems_device_driver console_read(
   void                    * arg
 )
 {
+  (void) major;
+  (void) minor;
+  (void) arg;
+
   return rtems_termios_read (arg);
 }
 
@@ -411,6 +422,10 @@ rtems_device_driver console_write(
   void                    * arg
 )
 {
+  (void) major;
+  (void) minor;
+  (void) arg;
+
   return rtems_termios_write (arg);
 }
 
@@ -420,5 +435,9 @@ rtems_device_driver console_control(
   void                    * arg
 )
 {
+  (void) major;
+  (void) minor;
+  (void) arg;
+
   return rtems_termios_ioctl (arg);
 }

bsps/sparc/leon2/pci/at697_pci.c

@@ -411,6 +411,10 @@ static uint8_t at697pci_bus0_irq_map(pci_dev_t dev, int irq_pin)
 
 static int at697pci_translate(uint32_t *address, int type, int dir)
 {
+	(void) address;
+	(void) type;
+	(void) dir;
+
 	/* No address translation implmented at this point */
 	return 0;
 }
@@ -636,6 +640,8 @@ int at697pci_init1(struct drvmgr_dev *dev)
 
 int at697pci_init2(struct drvmgr_dev *dev)
 {
+	(void) dev;
+
 #if 0
 	struct at697pci_priv *priv = dev->priv;
 #endif

bsps/sparc/leon2/start/bspidle.c

@@ -28,6 +28,8 @@
 
 void *bsp_idle_thread( uintptr_t ignored )
 {
+  (void) ignored;
+
   while (1) {
     /* make sure on load follows store to power-down reg */
     LEON_REG.Power_Down = LEON_REG.Power_Down;

bsps/sparc/leon2/start/cache.c

@@ -27,6 +27,9 @@ static inline void _CPU_cache_invalidate_instruction_range(
   size_t      n_bytes
 )
 {
+  (void) i_addr;
+  (void) n_bytes;
+
   __asm__ volatile ("flush");
 }