qcacld-3.0: Enable MCL feature flag REO_DESC_DEFER_FREE

In the REO status callback function for RX tid delete if the
cache flush cmd is not sent successfully to REO, add the REO
descriptor back to the free desc list and defer the deletion
to the callback function.

Changes are made under MCL feature flag REO_DESC_DEFER_FREE.

Change-Id: Ib6c077ebf763ab8feb4c45c17ff37d03252fe093
CRs-Fixed: 2558052
diff --git a/Kbuild b/Kbuild
index 622a66f..08f8021 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2688,6 +2688,7 @@
 endif
 
 cppflags-$(CONFIG_WLAN_CLD_PM_QOS) += -DCLD_PM_QOS
+cppflags-$(CONFIG_REO_DESC_DEFER_FREE) += -DREO_DESC_DEFER_FREE
 cppflags-$(CONFIG_WLAN_FEATURE_11AX) += -DWLAN_FEATURE_11AX
 cppflags-$(CONFIG_WLAN_FEATURE_11AX) += -DWLAN_FEATURE_11AX_BSS_COLOR
 cppflags-$(CONFIG_WLAN_FEATURE_11AX) += -DSUPPORT_11AX_D3