DCDC1 is used as VDD_MPU in all known boards,
let's define all other valid voltages for that
rail so it can be used by our boards.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add in an init function for the drivers/power framework so we can dump
and read the registers via i2c.
Cc: Łukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Tom Rini <trini@ti.com>