fmu-v5 timer_config: set up the timers for v5 board

FMU_CH7/8 use timer 12 ch1/2
FMU_CAP use timer 2
Buzzer use timer 9

src/drivers/boards/px4fmu-v5/px4fmu_timer_config.c

@@ -71,6 +71,38 @@ __EXPORT const io_timers_t io_timers[MAX_IO_TIMERS] = {
 		.last_channel_index = 5,
 		.handler = io_timer_handler1,
 		.vectorno =  STM32_IRQ_TIM4,
+	},
+	{
+		.base = STM32_TIM12_BASE,
+		.clock_register = STM32_RCC_APB1ENR,
+		.clock_bit = RCC_APB1ENR_TIM12EN,
+		.clock_freq = STM32_APB1_TIM12_CLKIN,
+		.first_channel_index = 6,
+		.last_channel_index = 7,
+		.handler = io_timer_handler2,
+		.vectorno =  STM32_IRQ_TIM12,
+	},
+	{
+		.base = STM32_TIM9_BASE,
+		.clock_register = STM32_RCC_APB2ENR,
+		.clock_bit = RCC_APB2ENR_TIM9EN,
+		.clock_freq = STM32_APB2_TIM9_CLKIN,
+		.first_channel_index = 8,
+		.last_channel_index = 8,
+		.handler = io_timer_handler3,
+		.vectorno =  STM32_IRQ_TIM9,
+
+	},
+	{
+		.base = STM32_TIM2_BASE,
+		.clock_register = STM32_RCC_APB1ENR,
+		.clock_bit = RCC_APB2ENR_TIM2EN,
+		.clock_freq = STM32_APB2_TIM2_CLKIN,
+		.first_channel_index = 9,
+		.last_channel_index = 9,
+		.handler = io_timer_handler4,
+		.vectorno =  STM32_IRQ_TIM2,
+
 	}
 };