iwlwifi: enable twt by default

TWT has been disabled during stabilization and further testing of the
FW code.  It is now considered stable, so TWT can be enabled in the
driver.
Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200928093526.44c9093fc632.I181fc5c80988e7ecea281c60e57a22ae7ec86716@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/constants.h

@@ -152,7 +152,7 @@
 #define IWL_MVM_FTM_INITIATOR_ALGO		IWL_TOF_ALGO_TYPE_MAX_LIKE
 #define IWL_MVM_FTM_INITIATOR_DYNACK		true
 #define IWL_MVM_D3_DEBUG			false
-#define IWL_MVM_USE_TWT				false
+#define IWL_MVM_USE_TWT				true
 #define IWL_MVM_AMPDU_CONSEC_DROPS_DELBA	10
 #define IWL_MVM_USE_NSSN_SYNC			0
 #define IWL_MVM_PHY_FILTER_CHAIN_A		0