drm_hwcomposer: Add platformhisi buffer importer for hikey and hikey960

This allows for importing buffers allocated from the
hikey and hikey960 gralloc implementations.

Cc: Marissa Wall <marissaw@google.com>
Cc: Sean Paul <seanpaul@google.com>
Cc: Dmitry Shmidt <dimitrysh@google.com>
Cc: Robert Foss <robert.foss@collabora.com>
Cc: Matt Szczesiak <matt.szczesiak@arm.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: David Hanna <david.hanna11@gmail.com>
Cc: Rob Herring <rob.herring@linaro.org>
Cc: Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@arm.com>
Cc: Alistair Strachan <astrachan@google.com>
Acked-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/platformdrmgeneric.h b/platformdrmgeneric.h
index 8376580..fbe059b 100644
--- a/platformdrmgeneric.h
+++ b/platformdrmgeneric.h
@@ -35,8 +35,8 @@
   int ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) override;
   int ReleaseBuffer(hwc_drm_bo_t *bo) override;
 
- private:
   uint32_t ConvertHalFormatToDrm(uint32_t hal_format);
+ private:
 
   DrmResources *drm_;