ARM: OMAP3: pandora: setup regulator framework for MMC

Setup regulators for MMC1 and MMC2 to get those SD slots
working again.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
CC: David Brownell <david-b@pacbell.net>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>