drivers: ieee802154_rf2xx: Correct bit mask
Correct bit mask for RF2XX_RX_TRAC_BIT_MASK. Current mask produce dead
code warnings when comparing to value:
RF2XX_TRX_PHY_STATE_TRAC_INVALID = 0x07
/* RX_STATUS */
#define RF2XX_RX_TRAC_STATUS 4
-#define RF2XX_RX_TRAC_BIT_MASK 0x03
+#define RF2XX_RX_TRAC_BIT_MASK 0x07
#endif /* ZEPHYR_DRIVERS_IEEE802154_IEEE802154_RF2XX_REGS_H_ */
