Convert CONFIG_TEGRA_ENABLE_UARTA et al to Kconfig

This converts the following to Kconfig:
   CONFIG_TEGRA_ENABLE_UARTA
   CONFIG_TEGRA_ENABLE_UARTB
   CONFIG_TEGRA_ENABLE_UARTC
   CONFIG_TEGRA_ENABLE_UARTD
   CONFIG_TEGRA_SPI
   CONFIG_TEGRA_UARTA_GPU
   CONFIG_TEGRA_UARTA_SDIO1
   CONFIG_TEGRA_VDD_CORE_TPS62361B_SET3
   CONFIG_TEGRA_VDD_CORE_TPS62366A_SET1

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-tegra/tegra20/Kconfig b/arch/arm/mach-tegra/tegra20/Kconfig
index 345563f..955786c 100644
--- a/arch/arm/mach-tegra/tegra20/Kconfig
+++ b/arch/arm/mach-tegra/tegra20/Kconfig
@@ -10,6 +10,12 @@
 config TEGRA_CLOCK_SCALING
 	bool
 
+config TEGRA_UARTA_GPU
+	bool
+
+config TEGRA_UARTA_SDIO1
+	bool
+
 choice
 	prompt "Tegra20 board select"
 	optional
@@ -43,6 +49,7 @@
 config TARGET_TRIMSLICE
 	bool "Compulab TrimSlice board"
 	select BOARD_LATE_INIT
+	select TEGRA_UARTA_GPU
 
 config TARGET_VENTANA
 	bool "NVIDIA Tegra20 Ventana evaluation board"
@@ -51,6 +58,7 @@
 config TARGET_COLIBRI_T20
 	bool "Toradex Colibri T20 board"
 	select BOARD_LATE_INIT
+	select TEGRA_UARTA_SDIO1
 
 endchoice