msm: sensor: flash: add conditional check for ioctl

Add conditional check when sending VIDIOC_MSM_FLASH_CFG
in 32-bit process.

Change-Id: I73bcce85a212495ce94e6265947c11a6bc0e4040
CRs-Fixed: 2092793
Bug: 64836865
Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-3.10


Git-commit: b153beb7af263b04ff6f79286eacba977e2f10eb
Signed-off-by: Tanvi Aggarwal <tanvia@codeaurora.org>
Signed-off-by: Dennis Cagle <d-cagle@codeaurora.org>