[FL-944] Preliminary BLE fix: leave PC4 unconfigured. Cleanup code. (#381)

* GPIO: disable CC1101 GD0 pin configuration. API HAL OS: enable sleep. Cleanup interrupts and gpio code.

* API HAL: disable deep sleep, add light sleep, use it instead.

firmware/targets/f5/api-hal/api-hal-power.c

@@ -42,6 +42,10 @@ bool api_hal_power_deep_available() {
     return api_hal_bt_is_alive() && api_hal_power_insomnia == 0;
 }
 
+void api_hal_power_light_sleep() {
+    __WFI();
+}
+
 void api_hal_power_deep_sleep() {
   while( LL_HSEM_1StepLock(HSEM, CFG_HW_RCC_SEMID));
 
@@ -86,6 +90,15 @@ void api_hal_power_deep_sleep() {
     LL_HSEM_ReleaseLock(HSEM, CFG_HW_RCC_SEMID, 0);
 }
 
+void api_hal_power_sleep() {
+    if(api_hal_power_deep_available()) {
+        api_hal_power_deep_sleep();
+    } else {
+        api_hal_power_light_sleep();
+    }
+}
+
+
 uint8_t api_hal_power_get_pct() {
     return bq27220_get_state_of_charge();
 }
@@ -203,4 +216,4 @@ void api_hal_power_enable_external_3_3v(){
 
 void api_hal_power_disable_external_3_3v(){
     LL_GPIO_ResetOutputPin(PERIPH_POWER_GPIO_Port, PERIPH_POWER_Pin);
-}
+}