Fix brcm keys

Did not match the key used in the plugin metadata.

Change-Id: I58cf08c684b33d8d7166a074dbafb4187b010498
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Fix some typos

Change-Id: I5c734561c0c13192acd9ffd590eb2e8eeb3ca4e1
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Fix qwindow-compositor with raster surfaces

Using the texture cache is wrong for two reasons:
1) it's a private API
2) we will get new QImages all the time so the caching is effectively useless

The main problem here is that the textures were not deleted which embedded
systems do not really like.

Change-Id: Ia9bafb0df58491f5ceb08ddcd9bf11b7c6137c83
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>