Bluetooth: Controller: Revert EVENT_OVERHEAD_START_US for Coded PHY

Revert EVENT_OVERHEAD_START_US value for Coded PHY support,
needed to pass LL/DDI/SCN/BV-21-C and LL/DDI/SCN/BV-25-C.

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

Author: cvinayak

subsys/bluetooth/controller/ll_sw/nordic/lll/lll_vendor.h

@@ -21,22 +21,22 @@
 /* Active connection in peripheral role with extended scanning on 1M and Coded
  * PHY, scheduling and receiving auxiliary PDUs.
  */
-#define EVENT_OVERHEAD_START_US       458
+#define EVENT_OVERHEAD_START_US       733 /* 24 RTC ticks */
 #else /* !CONFIG_BT_CTLR_PHY_CODED */
 /* Active connection in peripheral role with extended scanning on 1M only,
  * scheduling and receiving auxiliary PDUs.
  */
-#define EVENT_OVERHEAD_START_US       428
+#define EVENT_OVERHEAD_START_US       428 /* 14 RTC ticks */
 #endif /* !CONFIG_BT_CTLR_PHY_CODED */
 #else /* !CONFIG_BT_OBSERVER */
 /* Active connection in peripheral role with legacy scanning on 1M.
  */
-#define EVENT_OVERHEAD_START_US       275
+#define EVENT_OVERHEAD_START_US       275 /* 9 RTC ticks */
 #endif /* !CONFIG_BT_OBSERVER */
 #else /* !CONFIG_BT_CTLR_ADV_EXT */
 /* Active connection in peripheral role with additional advertising state.
  */
-#define EVENT_OVERHEAD_START_US       275
+#define EVENT_OVERHEAD_START_US       275 /* 9 RTC ticks */
 #endif /* !CONFIG_BT_CTLR_ADV_EXT */
 
 /* Worst-case time margin needed after event end-time in the air