opp: core: Fix off by one in dev_pm_opp_get_bw()

The "opp->bandwidth" array has "opp->opp_table->path_count" number of
elements.  It's allocated in _opp_allocate().  So this > needs to be >=
to prevent an out of bounds access.

Fixes: d78653dcd8bf ("opp: core: implement dev_pm_opp_get_bw")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/opp/core.c

@@ -121,7 +121,7 @@ unsigned long dev_pm_opp_get_bw(struct dev_pm_opp *opp, bool peak, int index)
 		return 0;
 	}
 
-	if (index > opp->opp_table->path_count)
+	if (index >= opp->opp_table->path_count)
 		return 0;
 
 	if (!opp->bandwidth)