quoted

 choice
         prompt "Low-level debug console UART"
         default TEGRA_DEBUG_UART_NONE

diff --git a/arch/arm/mach-tegra/Makefile.boot b/arch/arm/mach-tegra/Makefile.boot
index cf51a00..7c1110f 100644
--- a/arch/arm/mach-tegra/Makefile.boot
+++ b/arch/arm/mach-tegra/Makefile.boot

@@ -7,3 +7,4 @@ dtb-$(CONFIG_MACH_PAZ00) += tegra-paz00.dtb
 dtb-$(CONFIG_MACH_SEABOARD) += tegra-seaboard.dtb
 dtb-$(CONFIG_MACH_TRIMSLICE) += tegra-trimslice.dtb
 dtb-$(CONFIG_MACH_VENTANA) += tegra-ventana.dtb
+dtb-$(CONFIG_MACH_CARDHU) += tegra-cardhu.dtb

Likewise, this should be more like:
dtb-$(CONFIG_MACH_TEGRA_DT) += tegra-seaboard.dtb tegra-trimslice.dtb
tegra-ventana.dtb ...

I think is subject of a different patch.

Cheers,

Peter.