OMAP3: pandora: update config for production

Update pandora's config so that it can boot production kernels from NAND.
This enables UBI, USB, sets up NAND layout and default boot command.
It also expands malloc area so that UBI works.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>