counter: stm32-lptimer-cnt: Add const qualifier for actions_list array

The struct counter_synapse actions_list member expects a const enum
counter_synapse_action array. This patch adds the const qualifier to the
stm32_lptim_cnt_synapse_actions to match actions_list.

Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/785e0daa3633923ede42394f423fcf94c4469154.1623201081.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/counter/stm32-lptimer-cnt.c

@@ -146,7 +146,7 @@ enum stm32_lptim_synapse_action {
 	STM32_LPTIM_SYNAPSE_ACTION_NONE,
 };
 
-static enum counter_synapse_action stm32_lptim_cnt_synapse_actions[] = {
+static const enum counter_synapse_action stm32_lptim_cnt_synapse_actions[] = {
 	/* Index must match with stm32_lptim_cnt_polarity[] (priv->polarity) */
 	[STM32_LPTIM_SYNAPSE_ACTION_RISING_EDGE] = COUNTER_SYNAPSE_ACTION_RISING_EDGE,
 	[STM32_LPTIM_SYNAPSE_ACTION_FALLING_EDGE] = COUNTER_SYNAPSE_ACTION_FALLING_EDGE,