msm: msm_bus: Correct the IOCTL command data type

User space send command in explicit type format but
IOCTL module rely on native command type format.

Correct the command type format in IOCTL module to
use explicit type.

Change-Id: I366689b39e11718e41ee021272bf625e1f735897
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>