qcacld-3.0: Enable DP_MEM_PRE_ALLOC flag

Add support for DP SRNG consistent memory pre-alloc.

Change-Id: I867ff901aa6d26f86b16167fb3955096d318d61c
CRs-Fixed: 2740424
diff --git a/Kbuild b/Kbuild
index a90e799..50e19fa 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2874,6 +2874,7 @@
 cppflags-$(CONFIG_TSO_DEBUG_LOG_ENABLE) += -DTSO_DEBUG_LOG_ENABLE
 cppflags-$(CONFIG_DP_LFR) += -DDP_LFR
 cppflags-$(CONFIG_DUP_RX_DESC_WAR) += -DDUP_RX_DESC_WAR
+cppflags-$(CONFIG_DP_MEM_PRE_ALLOC) += -DDP_MEM_PRE_ALLOC
 cppflags-$(CONFIG_DP_TXRX_SOC_ATTACH) += -DDP_TXRX_SOC_ATTACH
 cppflags-$(CONFIG_HTT_PADDR64) += -DHTT_PADDR64
 cppflags-$(CONFIG_WLAN_FEATURE_BMI) += -DWLAN_FEATURE_BMI