Bluetooth: Controller: Fix power amp for transmit of chain scan resp

Fix power amp for transmitting of chain scan response
wherein capture of PDU end timestamp was missing causing
power amplifier from not being enabled for first chain PDU.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/controller/ll_sw/nordic/lll/lll_adv_aux.c

@@ -605,6 +605,10 @@ static inline int isr_rx_pdu(struct lll_adv_aux *lll_aux,
 							 lll->phy_flags,
 							 lll->phy_s,
 							 lll->phy_flags);
+#if defined(HAL_RADIO_GPIO_HAVE_PA_PIN)
+			radio_tmr_end_capture();
+#endif /* HAL_RADIO_GPIO_HAVE_PA_PIN */
+
 #endif /* CONFIG_BT_CTLR_ADV_PDU_BACK2BACK */
 
 		} else {