IOC mediator: fix wakeup reason issue when UOS resuming

IOC mediator should keep sending acnrd boot reason until received
UOS heartbeat init message, then turn to send SOS wakeup reason
through read native cbc lifecycle cdev.

Tracked-On: #1727
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>

Author: yliu80

devicemodel/hw/platform/ioc_cbc.c

@@ -652,14 +652,14 @@ cbc_process_wakeup_reason(struct cbc_pkt *pkt)
 		/* Unset RTC bit if UOS sends active heartbeat */
 		reason &= ~CBC_WK_RSN_RTC;
 	} else {
-		reason &= ~CBC_WK_RSN_SOC;
-
 		/*
-		 * Set RTC bit when bootup or resuming reason is
-		 * RTC wakeup reason, and hold the bit until UOS
-		 * sends active heartbeat.
+		 * If UOS is inactive, indicate the acrnd boot reason
+		 * as UOS periodic wakeup reason.
 		 */
-		reason |= pkt->ioc->boot_reason & CBC_WK_RSN_RTC;
+		reason = pkt->ioc->boot_reason;
+
+		/* Unset SoC bit */
+		reason &= ~CBC_WK_RSN_SOC;
 	}
 
 	/* Update periodic wakeup reason */
@@ -949,7 +949,8 @@ cbc_tx_handler(struct cbc_pkt *pkt)
 		/* Heartbeat init also indicates UOS enter active state */
 		pkt->uos_active = true;
 	} else if (pkt->req->rtype == CBC_REQ_T_UOS_ACTIVE) {
-		cbc_update_wakeup_reason(pkt, pkt->reason | CBC_WK_RSN_SOC);
+		cbc_update_wakeup_reason(pkt, pkt->ioc->boot_reason |
+				CBC_WK_RSN_SOC);
 		cbc_send_pkt(pkt);
 
 		/* Enable UOS active flag */