BACKPORT: FROMLIST: iommu/io-pgtable-arm-v7s: Quad lvl1 pgtable for MediaTek

The standard input iova bits is 32. MediaTek quad the lvl1 pagetable
(4 * lvl1). No change for lvl2 pagetable. Then the iova bits can reach
34bit.

Bug: 167939345
Link: https://lore.kernel.org/patchwork/patch/1301122/


Change-Id: I29095a7f521c73da3fa017e81471ba41db8377ff
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Chao Hao <chao.hao@mediatek.com>
Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>