iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRY

iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRY

The default geometry is the same as the one set by qman_port given
that FSL_PAMU depends on having 64-bit physical and thus DMA addresses.

Remove the support to update the geometry and remove the now pointless
geom_size field.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20210401155256.298656-4-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>