regulator smps123 supply from Palmas PMIC powers CPU0 on DRA7 EVM.

[nm@ti.com: rebase to latest]
Signed-off-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NJ Keerthy <j-keerthy@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>