board: lg-x3: convert LG Optimus 4X and Vu to use DM PMIC

Since required drivers were merged, we can safely clean up the
board and switch to DM based driver with device tree support.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/configs/x3_t30_defconfig b/configs/x3_t30_defconfig
index a151f58..90cbc20 100644
--- a/configs/x3_t30_defconfig
+++ b/configs/x3_t30_defconfig
@@ -45,6 +45,7 @@
 CONFIG_CMD_UMS_ABORT_KEYED=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_PAUSE=y
+CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT4_WRITE=y
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set
@@ -64,11 +65,14 @@
 CONFIG_SYS_I2C_TEGRA=y
 CONFIG_BUTTON_KEYBOARD=y
 CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_MAX77663=y
 CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_MAX77663=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_PWM_TEGRA=y
 CONFIG_SYS_NS16550=y
 CONFIG_TEGRA20_SLINK=y
+CONFIG_SYSRESET_MAX77663=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_TEGRA=y