Enable 'make traceview' under Windows.

Change-Id: I2b89d2ee66d0bb4a1b2bb6e4ea15d3b0419cead9
diff --git a/core/main.mk b/core/main.mk
index 0c10c5e..1f03355 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -446,6 +446,7 @@
 	sdk/sdkstats \
 	sdk/sdkmanager \
 	sdk/swtmenubar \
+	sdk/traceview \
 	development/apps \
 	development/tools/mkstubs \
 	packages