drm_hwcomposer: Extract more BO data by Imagination importer v2

Fields bo->hal_format and bo->pixel_stride should be set to pass validation
by Mapper HAL v2.1 and v3.0. Otherwise UI is missing and the following
message appears in the logcat:

```
2576 E GraphicBufferMapper: validateBufferSize(0xe663b3637400) failed: 7
2576 E hwc-drm-utils: Failed to import buffer handle err: 7
2576 E hwc-drm-two: Failed to import layer, ret=7
```

Fixes: e3ed48d728aa ("drm_hwcomposer: Add Imagination platform support")
Signed-off-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
diff --git a/platform/platformimagination.cpp b/platform/platformimagination.cpp
index ea34ecc..bd4a4c3 100644
--- a/platform/platformimagination.cpp
+++ b/platform/platformimagination.cpp
@@ -39,6 +39,8 @@
   bo->usage = hnd->usage;
   bo->prime_fds[0] = hnd->fd[0];
   bo->pitches[0] = ALIGN(hnd->iWidth, HW_ALIGN) * hnd->uiBpp >> 3;
+  bo->hal_format = hnd->iFormat;
+  bo->pixel_stride = hnd->aiStride[0];
 
   switch (hnd->iFormat) {
 #ifdef HAL_PIXEL_FORMAT_BGRX_8888