qcacld-3.0: Enable per-PDEV Tx descriptor pool

Napier uses per-PDEV Tx descriptor pool until per-VDEV descriptor
pools are introduced.

Change-Id: I6887d07046045b12e6f3983793eb66ae16f63772
CRs-Fixed: 2005582

Kbuild

@@ -1796,7 +1796,7 @@ CDEFINES += -DQCA_WIFI_QCA8074
 CDEFINES += -DQCA_WIFI_NAPIER_EMULATION
 CDEFINES += -DQCA_WIFI_QCA8074_VP
 CDEFINES += -DDP_INTR_POLL_BASED
-CDEFINES += -DTX_PER_VDEV_DESC_POOL
+CDEFINES += -DTX_PER_PDEV_DESC_POOL
 endif
 
 # Dummy flag for WIN/MCL converged data path compilation