msm: msm_bus: Fix setting the modes for masters

The check for permitted modes was incorrect.
This resulted in the modes not being set during init.
Fix this by correctly checking for permitted modes.

Change-Id: I9047ea0f3ad4c9b8d3d3dea89238f3f670d435ce
Signed-off-by: Gagan Mac <gmac@codeaurora.org>