qcacld-3.0: Export CONFIG_ENABLE_VALLOC_REPLACE_MALLOC

Export CONFIG_ENABLE_VALLOC_REPLACE_MALLOC to
make it configurable while need to replace malloc
with valloc for some big size memory request case.

Change-Id: I8d138f3b4565aa2d6d5efde531560dafeb906106
CRs-Fixed: 3429232

Kbuild

@@ -3506,6 +3506,8 @@ cppflags-$(CONFIG_MONITOR_MODULARIZED_ENABLE) += -DMONITOR_MODULARIZED_ENABLE
 cppflags-$(CONFIG_DP_PKT_ADD_TIMESTAMP) += -DCONFIG_DP_PKT_ADD_TIMESTAMP
 cppflags-$(CONFIG_WLAN_PDEV_VDEV_SEND_MULTI_PARAM) += -DWLAN_PDEV_VDEV_SEND_MULTI_PARAM
 
+cppflags-$(CONFIG_ENABLE_VALLOC_REPLACE_MALLOC) += -DENABLE_VALLOC_REPLACE_MALLOC
+
 ifeq ($(CONFIG_LEAK_DETECTION), y)
 cppflags-y += \
 	-DCONFIG_HALT_KMEMLEAK \