samsung: board: init the s2mps11 pmic during booting time

Exynos5422 board has s2mps11 pmic.
If CONFIG_PMIC_S2MPS11 is enabled, it can initialize PMIC and Regulators
during booting time.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>