qcacld-3.0: Add feature flag for nbuff replenish

Add new feature flag for nbuff replenish timer apis to
replace CONFIG_MCL flag.

Change-Id: Ibb65dd28b657085a20b6e3b036e6f96b4851481e
CRs-Fixed: 2421564

Kbuild

@@ -2674,6 +2674,8 @@ ifdef CONFIG_FW_THERMAL_THROTTLE
 ccflags-y += -DFW_THERMAL_THROTTLE_SUPPORT
 endif
 
+cppflags-y += -DFEATURE_NBUFF_REPLENISH_TIMER
+
 ccflags-$(CONFIG_HASTINGS_BT_WAR) += -DHASTINGS_BT_WAR
 
 KBUILD_CPPFLAGS += $(cppflags-y)