The register blocks don't occupy 4K. In fact, some blocks are packed
close to others and assuming they're 4K causes overlaps:

  pxa2xx-i2c d4033800.i2c: can't request region for resource
    [mem 0xd4033800-0xd40347ff]

Link: https://lore.kernel.org/r/20191220071443.247183-1-lkundrak@v3.skSigned-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Olof Johansson <olof@lixom.net>