defconfig: disable ov2659 and ov5642 CIF SoC cameras

The CIF pins are not connected on the Radxa board.
This patch fixes the following I2C errors in dmesg boot log:
i2c i2c-3: No ack, Maybe slave(addr: 0x30) not exist or abnormal power-on, retry 1...
ov2659 write reg(0x103, val:0x1) failed, try to write again!
soft reset ov2659 failed
camera 33-1-ov2659_front: Probe ov2659_front failed
defconfig: disable mt6229 3G module (drivers/misc)

This patch fixes the 1 second boot delay after:
Android kernel panic handler initialized (bind=kpanic)
Merge pull request #1 from neo-technologies/wip/rockchip-3.0-radxa-rock

Wip/rockchip 3.0 radxa rock