qcacmn: Move NBUFF related declarations under correct feature flag

Currently NBUFF related parameters are declared under CONFIG_MCL
feature flag and are getting used under
FEATURE_NBUFF_REPLENISH_TIMER feature flag.

As part of CONFIG_MCL cleanup, move NBUFF related parameters
under correct feature flag FEATURE_NBUFF_REPLENISH_TIMER.

Change-Id: I438f7dbc0c67343c94ad78ea4df4cfb1fd2f051b
CRs-Fixed: 2472011

qdf/linux/src/qdf_nbuf.c

@@ -91,7 +91,7 @@
 #define RADIOTAP_CCK_CHANNEL 0x0020
 #define RADIOTAP_OFDM_CHANNEL 0x0040
 
-#ifdef CONFIG_MCL
+#ifdef FEATURE_NBUFF_REPLENISH_TIMER
 #include <qdf_mc_timer.h>
 
 struct qdf_track_timer {