defconfig: lahaina: Enable DMA_CONFIGURE_ALIGNMENT

Enable support for configuring IOVA alignment since some IOMMU clients
don't require any IOVA alignment and therefore would benefit from the
reduced fragmentation that would result.

Change-Id: Ide09a63d2efe1256d3424a9cebee4f330c07ca02
Signed-off-by: Liam Mark <lmark@codeaurora.org>