mac80211: rename driver-trace file

This file will contain more soon, so
rename it to just trace.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 231ffa0..a7dd110 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -24,7 +24,7 @@
 	wme.o \
 	event.o \
 	chan.o \
-	driver-trace.o mlme.o
+	trace.o mlme.o
 
 mac80211-$(CONFIG_MAC80211_LEDS) += led.o
 mac80211-$(CONFIG_MAC80211_DEBUGFS) += \
@@ -42,7 +42,7 @@
 
 mac80211-$(CONFIG_PM) += pm.o
 
-CFLAGS_driver-trace.o := -I$(src)
+CFLAGS_trace.o := -I$(src)
 
 # objects for PID algorithm
 rc80211_pid-y := rc80211_pid_algo.o