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/arch/arm/dts/tegra30-asus-transformer.dtsi b/arch/arm/dts/tegra30-asus-transformer.dtsi
index 888f9ca..afddb83 100644
--- a/arch/arm/dts/tegra30-asus-transformer.dtsi
+++ b/arch/arm/dts/tegra30-asus-transformer.dtsi
@@ -82,6 +82,7 @@
 					regulator-name = "vdd_emmc_core";
 					regulator-min-microvolt = <3300000>;
 					regulator-max-microvolt = <3300000>;
+					regulator-boot-on;
 				};
 
 				/* uSD slot VDD */
@@ -89,6 +90,7 @@
 					regulator-name = "vdd_usd";
 					regulator-min-microvolt = <3100000>;
 					regulator-max-microvolt = <3100000>;
+					regulator-boot-on;
 				};
 
 				/* uSD slot VDDIO */