hikey/hikey960: Add userland support for dmabuf heap dev dir

This patch adds the userland bits to support the dmabuf heap
dev dir (/dev/dma_heap/*).

Change-Id: Id837c19adc931973e9791355b06bd0aceff60275
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/ueventd.common.rc b/ueventd.common.rc
index b7dd505..7f37c25 100644
--- a/ueventd.common.rc
+++ b/ueventd.common.rc
@@ -1,5 +1,9 @@
 modalias_handling enabled
 
+subsystem dma_heap
+    devname uevent_devpath
+    dirname /dev/dma_heap
+
 subsystem usbmisc
     devname uevent_devname
 
@@ -14,6 +18,8 @@
 /dev/hi_vdec     0660 system camera
 /dev/hi_venc     0660 system camera
 /dev/ion	 0666 system graphics
+/dev/dma_heap/system	0666 system graphics
+/dev/dma_heap/linux,cma	0666 system graphics
 /dev/graphics/fb0	0666 system graphics
 
 /sys/devices/platform/ddr_devfreq/devfreq/ddr_devfreq		min_freq	0644	system	system