This patch hooks up the twl4030 MMC1 regulator on Overo,
The WLAN chip connected to MMC2 on some board versions
has a dedicated regulator.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Tony Lindgren <tony@atomide.com>