iommu: Default Enable DMA_CONFIGURE_ALIGNMENT

Enable DMA_CONFIGURE_ALIGNMENT by default for QGKI. Enablement as such
doesn't change the default alignment of DMA clients, clients needs to
explicitly enable it.

Change-Id: I5677d224fcb147a33a0b86bb7e80741572809756
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>