defconfig: msm8226: Disable bayer camera drivers

This change is required to disable the IMX135, OV9724,
OV5648, OV8825, OV8865, OV12830 image sensor drivers
compilation for msm8226 based platforms.

In current camera implementation we need to prevent twice
creating of kernel video nodes because this is already
done in "generic" sensor driver.

Change-Id: Icaa0e7aa2df5061709219fccf7af5b42e0b436c4
Signed-off-by: Evgeniy Borisov <eborisov@codeaurora.org>