iwlwifi: mvm: add DCM flag to rate pretty-print

It's useful to know if DCM was enabled, add this flag
to the rate pretty-printer.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200417131727.891bb9741eca.Ia66448f7e00be9e4c9ea7147b90d4fcd5f1d3845@changeid

drivers/net/wireless/intel/iwlwifi/mvm/rs.c

@@ -3740,11 +3740,12 @@ int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate)
 	}
 
 	return scnprintf(buf, bufsz,
-			 "0x%x: %s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s",
+			 "0x%x: %s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s%s",
 			 rate, type, rs_pretty_ant(ant), bw, mcs, nss,
 			 (rate & RATE_MCS_SGI_MSK) ? "SGI " : "NGI ",
 			 (rate & RATE_MCS_STBC_MSK) ? "STBC " : "",
 			 (rate & RATE_MCS_LDPC_MSK) ? "LDPC " : "",
+			 (rate & RATE_HE_DUAL_CARRIER_MODE_MSK) ? "DCM " : "",
 			 (rate & RATE_MCS_BF_MSK) ? "BF " : "");
 }