drm/i915: Fix out of tree builds
Fixes up include paths for i915_trace.h by setting additional CFLAGS
for i915_trace_points.c to include the $src directory. The required
TRACE_INCLUDE_PATH is then "."
Signed-off-by: Peter Clifton <pcjc2@cam.ac.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 9929f84..9563901 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -33,3 +33,5 @@
i915-$(CONFIG_COMPAT) += i915_ioc32.o
obj-$(CONFIG_DRM_I915) += i915.o
+
+CFLAGS_i915_trace_points.o := -I$(src)