board: transformer-t30: convert ASUS Transformers 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/transformer_t30_defconfig b/configs/transformer_t30_defconfig
index 092c0aa..8d828c1 100644
--- a/configs/transformer_t30_defconfig
+++ b/configs/transformer_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
@@ -65,10 +66,14 @@
 CONFIG_I2C_MUX_GPIO=y
 CONFIG_BUTTON_KEYBOARD=y
 CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_TPS65910=y
 CONFIG_DM_REGULATOR=y
 CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_TPS65911=y
 CONFIG_PWM_TEGRA=y
 CONFIG_SYS_NS16550=y
+CONFIG_TEGRA20_SLINK=y
+CONFIG_SYSRESET_TPS65910=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_TEGRA=y