iommu/omap: Align code with open parenthesis

Fix all the occurrences of the following check warning
generated with the checkpatch --strict option:
    "CHECK: Alignment should match open parenthesis"

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>