I assume that the me in your name output was a typo. Other than that, your output is almost the same as mine except that my uevent shows:

DRIVER=lis302dl
PHYSDEVBUS=i2c
MODALIAS=i2c:lis302dl

My first idea would be to reflash the rootfs. You say in the first post that you've reflashed the eMMC. Have you also reflashed the rootfs? If not then I'd give it a shot. Otherwise it really looks like a hardware issue.

I have no idea about service centres in New Delhi. Neither do I have any idea how difficult it is to replace the accelerometer. I would not be surprised if it required replacing the whole motherboard in which case buying a new used N900 (perhaps one for spares, with a broken screen but a working mobo) might be a cheaper option.