Keep rtc code if low power timer is used

Keep the RTC code if either DEVICE_RTC or DEVICE_LOWPOWERTIMER is
defined on the devices which use the RTC for both the rtc api and the
low power timer api. This allows DEVICE_LOWPOWERTIMER to be enabled while
DEVICE_RTC is turned off.

Author: c1728p9

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KL82Z/TARGET_USENSE/mbed_overrides.c

@@ -46,11 +46,11 @@ void NMI_Handler(void)
     gpio_init_in(&gpio, PTA4);
 }
 
-#ifdef DEVICE_RTC
+#if DEVICE_RTC || DEVICE_LOWPOWERTIMER
 // Enable the RTC oscillator if available on the board
 void rtc_setup_oscillator(RTC_Type *base)
 {
     /* Enable the RTC oscillator */
     RTC->CR |= RTC_CR_OSCE_MASK;
 }
-#endif
+#endif

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/rtc_api.c

@@ -15,7 +15,7 @@
  */
 #include "rtc_api.h"
 
-#if DEVICE_RTC
+#if DEVICE_RTC || DEVICE_LOWPOWERTIMER
 
 #include "pinmap.h"
 #include "fsl_rtc.h"

targets/TARGET_STM/rtc_api.c

@@ -27,7 +27,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *******************************************************************************
  */
-#if DEVICE_RTC
+#if DEVICE_RTC || DEVICE_LOWPOWERTIMER
 
 #include "rtc_api.h"
 #include "rtc_api_hal.h"
@@ -292,8 +292,6 @@ int rtc_isenabled(void)
 #endif /* TARGET_STM32F1 */
 }
 
-#if DEVICE_LOWPOWERTIMER
-
 static void RTC_IRQHandler(void)
 {
     /*  Update HAL state */
@@ -333,6 +331,5 @@ void rtc_synchronize(void)
 {
     HAL_RTC_WaitForSynchro(&RtcHandle);
 }
-#endif /* DEVICE_LOWPOWERTIMER */
 
-#endif /* DEVICE_RTC */
+#endif /* DEVICE_RTC || DEVICE_LOWPOWERTIMER */

targets/TARGET_Silicon_Labs/TARGET_EFM32/rtc_api.c

@@ -22,7 +22,7 @@
  ******************************************************************************/
 
 #include "device.h"
-#if DEVICE_RTC
+#if DEVICE_RTC || DEVICE_LOWPOWERTIMER
 
 #include "rtc_api.h"
 #include "rtc_api_HAL.h"