Hi Bharat,
I have gone thru the kernel code. I could only figure out that m25p80 is spi driver which is register as spi-driver.
Oh wow, an SPI NOR flash. In my opinion, this is a rare constellation, so you will probably need to debug MTD in Linux.
Registration is done, which I could see from early printk's. But this module is never probed. Next, kernel iterates through the list of devices and tries to find out mtdpart, which it can not see. Since your mail gave very good pointer where to look for with ref to another nor flash.
Ok, so the problem is really that the MTD layer does not know how to talk to your spi flash. I will not be of much help here, I'm afraid, so I'll advise to find a mailing list closer to the problem...
Seems I quoted text in previous mail which annoyed you. Sorry for being naive. I hope I will not repeat the same.
Well if one reads lots and lots of messages, it is basically important that everybody uses an e-mail style allowing efficient processing. There is a good FAQ on this:
http://www.netmeister.org/news/learn2quote.html
Cheers Detlev