soc: arm: nordic_nrf: align soc_secure.h to nRF54L

In nRF54L15 FICR can be accessed also from non-secure code,
so it does not have NRF_FICR_S defined.

Signed-off-by: Magdalena Pastula <magdalena.pastula@nordicsemi.no>

soc/arm/nordic_nrf/common/soc_secure.h

@@ -59,7 +59,7 @@ static inline void soc_secure_gpio_pin_mcu_select(uint32_t pin_number,
 #if defined(CONFIG_SOC_HFXO_CAP_INTERNAL)
 static inline uint32_t soc_secure_read_xosc32mtrim(void)
 {
-	return NRF_FICR_S->XOSC32MTRIM;
+	return NRF_FICR->XOSC32MTRIM;
 }
 #endif /* defined(CONFIG_SOC_HFXO_CAP_INTERNAL) */