bsps shared arm: Address unused parameter warnings

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

bsps/arm/shared/cache/cache-v7m.c

@@ -71,6 +71,9 @@ static inline void _CPU_cache_invalidate_instruction_range(
   size_t n_bytes
 )
 {
+  (void) i_addr;
+  (void) n_bytes;
+
   rtems_interrupt_level level;
 
   rtems_interrupt_disable(level);

bsps/shared/dev/clock/arm-generic-timer.c

@@ -110,6 +110,8 @@ static void arm_gt_clock_handler_install(rtems_interrupt_handler handler)
 
 static uint32_t arm_gt_clock_get_timecount(struct timecounter *tc)
 {
+  (void) tc;
+
   return (uint32_t) arm_gt_clock_get_count();
 }
 
@@ -134,6 +136,8 @@ static void arm_gt_clock_secondary_initialization(uint64_t cval)
 {
 #if defined(RTEMS_SMP) && !defined(CLOCK_DRIVER_USE_ONLY_BOOT_PROCESSOR)
   _SMP_Broadcast_action(arm_gt_clock_secondary_action, &cval);
+#else
+   (void) cval;
 #endif
 }
 

bsps/shared/dev/serial/arm-pl011.c

@@ -382,6 +382,8 @@ static bool arm_pl011_first_open(
   rtems_libio_open_close_args_t *args
 )
 {
+  (void) args;
+
   arm_pl011_context *context = (arm_pl011_context *) base;
 #ifdef BSP_CONSOLE_USE_INTERRUPTS
   rtems_status_code sc;
@@ -414,6 +416,8 @@ static void arm_pl011_last_close(
   rtems_libio_open_close_args_t *args
 )
 {
+  (void) args;
+
   const arm_pl011_context *context = (void *) base;
   (void) rtems_interrupt_handler_remove(
     context->irq,
@@ -533,4 +537,4 @@ const rtems_termios_device_handler arm_pl011_fns = {
   .poll_read = arm_pl011_read_polled,
   .mode = TERMIOS_POLLED,
 #endif
-};
+};