Removed following unused includes: <linux/mm.h>, <linux/errno.h>,
<linux/memblock.h> and <linux/export.h>.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Joerg Roedel <jroedel@suse.de>