iommu/arm-smmu-v3: replace module_param_named by module_param for disable_bypass

Just use module_param() - going out of the way to specify a "different"
name that's identical to the variable name is silly.

Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20200827092957.22500-3-song.bao.hua@hisilicon.com


Signed-off-by: Will Deacon <will@kernel.org>