fw-api: CL 19207537 - update fw common interface files

add HTT_STATS_RC_MODE_ULMUMIMO def

Change-Id: I4d17c463d7cf0cea3c844548eb7ce25edb26106d
CRs-Fixed: 2262693

fw/htt_stats.h

@@ -6776,6 +6776,7 @@ typedef enum {
     HTT_STATS_RC_MODE_DLSU     = 0,
     HTT_STATS_RC_MODE_DLMUMIMO = 1,
     HTT_STATS_RC_MODE_DLOFDMA  = 2,
+    HTT_STATS_RC_MODE_ULMUMIMO = 3,
 } htt_stats_rc_mode;
 
 typedef struct {