egl/android: Make get_fourcc() accept HAL formats

egl/android: Make get_fourcc() accept HAL formats

There are DRI_IMAGE_FOURCC macros, for which there are no corresponding
DRI_IMAGE_FORMAT macros. To support such formats we need to make the
lookup function take the native format directly. As a side effect, it
simplifies all existing calls to this function, because they all called
get_format() first to convert from native to DRI_IMAGE_FORMAT.

Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Rob Herring <rob@kernel.org>
Reviewed-by: Chad Versace <chad@kiwitree.net>
Change-Id: I4674000fb5ccfd02e38b8fa89bc567ac1d4fc16b