wlan: Do not let APPS suspend if roaming is in progress

If the Apps enters power collapse (suspend) during roaming (lfr
bgscan split scan, full scan, pre-auth or reassociation);
this shall lead to heart beat failures.
Fix this by protecting entire roaming process by voting
-ve and not letting APPS to power collapse.

CRs-Fixed: 456176
Change-Id: I440fdb02c439a1f8754099ad9acf8eafe4158d4b
diff --git a/CORE/SME/inc/csrNeighborRoam.h b/CORE/SME/inc/csrNeighborRoam.h
index 7d2e2c6..54a3a39 100644
--- a/CORE/SME/inc/csrNeighborRoam.h
+++ b/CORE/SME/inc/csrNeighborRoam.h
@@ -234,6 +234,7 @@
 void csrNeighborRoamTranistionPreauthDoneToDisconnected(tpAniSirGlobal pMac);
 tANI_BOOLEAN csrNeighborRoamStatePreauthDone(tpAniSirGlobal pMac);
 tANI_BOOLEAN csrNeighborRoamScanRspPending(tHalHandle hHal);
+tANI_BOOLEAN csrNeighborMiddleOfRoaming(tHalHandle hHal);
 VOS_STATUS csrNeighborRoamSetLookupRssiThreshold(tpAniSirGlobal pMac, v_U8_t neighborLookupRssiThreshold);