ARM: tegra: make .dts compilation depend on Tegra2 support

Update Makefile.boot to compile *.dts when the appropriate Tegra SoC
support is enabled, rather than requiring Kconfig to list each board
individually. Remove CONFIG_MACH_VENTANA now that it has no use.
Signed-off-by: NStephen Warren <swarren@nvidia.com>

arch/arm/mach-tegra/Kconfig

@@ -108,13 +108,6 @@ config MACH_WARIO
        help
          Support for the Wario version of Seaboard
 
-config MACH_VENTANA
-       bool "Ventana board"
-       depends on ARCH_TEGRA_2x_SOC
-       select MACH_TEGRA_DT
-       help
-         Support for the nVidia Ventana development platform
-
 choice
         prompt "Default low-level debug console UART"
         default TEGRA_DEBUG_UART_NONE

arch/arm/mach-tegra/Makefile.boot

@@ -2,9 +2,9 @@ zreladdr-$(CONFIG_ARCH_TEGRA_2x_SOC)	+= 0x00008000
 params_phys-$(CONFIG_ARCH_TEGRA_2x_SOC)	:= 0x00000100
 initrd_phys-$(CONFIG_ARCH_TEGRA_2x_SOC)	:= 0x00800000
 
-dtb-$(CONFIG_MACH_HARMONY) += tegra20-harmony.dtb
-dtb-$(CONFIG_MACH_PAZ00) += tegra20-paz00.dtb
-dtb-$(CONFIG_MACH_SEABOARD) += tegra20-seaboard.dtb
-dtb-$(CONFIG_MACH_TRIMSLICE) += tegra20-trimslice.dtb
-dtb-$(CONFIG_MACH_VENTANA) += tegra20-ventana.dtb
+dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20-harmony.dtb
+dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20-paz00.dtb
+dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20-seaboard.dtb
+dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20-trimslice.dtb
+dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra20-ventana.dtb
 dtb-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30-cardhu.dtb