arm: add dcc "uart" functionality
diff --git a/arch/arm/rules.mk b/arch/arm/rules.mk
index f74da67..a08ad5c 100644
--- a/arch/arm/rules.mk
+++ b/arch/arm/rules.mk
@@ -95,7 +95,8 @@
 	$(LOCAL_DIR)/exceptions.o \
 	$(LOCAL_DIR)/faults.o \
 	$(LOCAL_DIR)/mmu.o \
-	$(LOCAL_DIR)/thread.o
+	$(LOCAL_DIR)/thread.o \
+	$(LOCAL_DIR)/dcc.o
 
 # set the default toolchain to arm elf and set a #define
 TOOLCHAIN_PREFIX ?= arm-elf-