nimble/phy: Make private functions static

nimble/controller/include/controller/ble_phy.h

@@ -128,7 +128,6 @@ void ble_phy_disable(void);
 #define BLE_PHY_WFR_ENABLE_RX       (0)
 #define BLE_PHY_WFR_ENABLE_TXRX     (1)
 
-void ble_phy_stop_usec_timer(void);
 void ble_phy_wfr_enable(int txrx, uint8_t tx_phy_mode, uint32_t wfr_usecs);
 
 /* Starts rf clock */

nimble/drivers/nrf51/src/ble_phy.c

@@ -1388,7 +1388,7 @@ ble_phy_setchan(uint8_t chan, uint32_t access_addr, uint32_t crcinit)
 /**
  * Stop the timer used to count microseconds when using RTC for cputime
  */
-void
+static void
 ble_phy_stop_usec_timer(void)
 {
     NRF_TIMER0->TASKS_STOP = 1;
@@ -1404,7 +1404,7 @@ ble_phy_stop_usec_timer(void)
  * restarted in receive mode. Generally, the disable routine is called to stop
  * the phy.
  */
-void
+static void
 ble_phy_disable_irq_and_ppi(void)
 {
     NRF_RADIO->INTENCLR = NRF_RADIO_IRQ_MASK_ALL;

nimble/drivers/nrf52/src/ble_phy.c

@@ -1868,7 +1868,7 @@ int ble_phy_txpower_round(int dbm)
  *
  * @return int 0: success; PHY error code otherwise
  */
-int
+static int
 ble_phy_set_access_addr(uint32_t access_addr)
 {
     NRF_RADIO->BASE0 = (access_addr << 8);
@@ -1941,7 +1941,7 @@ ble_phy_setchan(uint8_t chan, uint32_t access_addr, uint32_t crcinit)
 /**
  * Stop the timer used to count microseconds when using RTC for cputime
  */
-void
+static void
 ble_phy_stop_usec_timer(void)
 {
     NRF_TIMER0->TASKS_STOP = 1;
@@ -1957,7 +1957,7 @@ ble_phy_stop_usec_timer(void)
  * restarted in receive mode. Generally, the disable routine is called to stop
  * the phy.
  */
-void
+static void
 ble_phy_disable_irq_and_ppi(void)
 {
     NRF_RADIO->INTENCLR = NRF_RADIO_IRQ_MASK_ALL;