OMAP3: CM-T35: Add support for CM-T3730

CM-T3730 is exactly the same board as CM-T35, but it has
TI DM3730 SoC onboard and therefore some changes have to take place

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>