ARM: tegra: remove CONFIG_MACH_TEGRA_DT

* Make ARCH_TEGRA select USE_OF; DT is the way forward.
* Build board-dt-tegra*.c when the relevant Tegra SoC support is enabled,
  rather than requiring a specific config option for this.
* The board-specific config options already build board-*-pinmux.o, and
  when booting from device tree these files are no longer needed, so we
  can remove some Makefile commands related to those files.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 2eb4445..60a0213 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -13,7 +13,6 @@
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= powergate.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += tegra2_clocks.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= tegra2_emc.o
-obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= tegra30_clocks.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
 obj-$(CONFIG_SMP)                       += reset.o
@@ -23,6 +22,9 @@
 obj-$(CONFIG_TEGRA_PCI)			+= pcie.o
 obj-$(CONFIG_USB_SUPPORT)		+= usb_phy.o
 
+obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-dt-tegra20.o
+obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o
+
 obj-$(CONFIG_MACH_HARMONY)              += board-harmony.o
 obj-$(CONFIG_MACH_HARMONY)              += board-harmony-pinmux.o
 obj-$(CONFIG_MACH_HARMONY)              += board-harmony-pcie.o
@@ -34,11 +36,5 @@
 obj-$(CONFIG_MACH_SEABOARD)             += board-seaboard.o
 obj-$(CONFIG_MACH_SEABOARD)             += board-seaboard-pinmux.o
 
-obj-$(CONFIG_MACH_TEGRA_DT)             += board-dt-tegra20.o
-obj-$(CONFIG_MACH_TEGRA_DT)             += board-harmony-pinmux.o
-obj-$(CONFIG_MACH_TEGRA_DT)             += board-seaboard-pinmux.o
-obj-$(CONFIG_MACH_TEGRA_DT)             += board-paz00-pinmux.o
-obj-$(CONFIG_MACH_TEGRA_DT)             += board-trimslice-pinmux.o
-
 obj-$(CONFIG_MACH_TRIMSLICE)            += board-trimslice.o
 obj-$(CONFIG_MACH_TRIMSLICE)            += board-trimslice-pinmux.o