nrf/nrfx_config: Disable RTC2 for nRF9160 targets.
nRF9160 does not have any RTC2. Disable the configuration in
case of NRF9160_XXAA.
#define NRFX_RTC_ENABLED (MICROPY_PY_MACHINE_RTCOUNTER)
#define NRFX_RTC0_ENABLED 1
#define NRFX_RTC1_ENABLED 1
-#define NRFX_RTC2_ENABLED (!NRF51)
+#define NRFX_RTC2_ENABLED (!NRF51) && (!NRF9160_XXAA)
#define NRFX_TIMER_ENABLED (MICROPY_PY_MACHINE_TIMER)
#define NRFX_TIMER0_ENABLED 1
