Build adbd instead of using prebuilt binary

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "kexec-tools"]
 	path = kexec-tools
 	url = https://github.com/Tasssadar/kexec-tools
+[submodule "adbd"]
+	path = adbd
+	url = https://github.com/Tasssadar/multirom_adbd.git

Android.mk

@@ -196,6 +196,9 @@ include $(multirom_local_path)/install_zip/Android.mk
 # Kexec-tools
 include $(multirom_local_path)/kexec-tools/Android.mk
 
+# adbd
+include $(multirom_local_path)/adbd/Android.mk
+
 # We need static libtruetype but it isn't in standard android makefile :(
 LOCAL_PATH := external/freetype/
 include $(CLEAR_VARS)

install_zip/Android.mk

@@ -12,7 +12,7 @@ ifeq ($(MR_FSTAB),)
     $(info MR_FSTAB not defined in device files)
 endif
 
-$(MULTIROM_ZIP_TARGET): multirom trampoline fw_mounter signapk bbootimg mrom_kexec_static
+$(MULTIROM_ZIP_TARGET): multirom trampoline fw_mounter signapk bbootimg mrom_kexec_static mrom_adbd
 	@echo
 	@echo
 	@echo "A crowdfunding campaign for MultiROM took place in 2013. These people got perk 'The Tenth':"
@@ -30,6 +30,7 @@ $(MULTIROM_ZIP_TARGET): multirom trampoline fw_mounter signapk bbootimg mrom_kex
 	cp -a $(TARGET_ROOT_OUT)/trampoline $(MULTIROM_INST_DIR)/multirom/
 	cp -a $(TARGET_ROOT_OUT)/fw_mounter $(MULTIROM_INST_DIR)/multirom/
 	cp -a $(TARGET_OUT_OPTIONAL_EXECUTABLES)/mrom_kexec_static $(MULTIROM_INST_DIR)/multirom/kexec
+	cp -a $(TARGET_OUT_OPTIONAL_EXECUTABLES)/mrom_adbd $(MULTIROM_INST_DIR)/multirom/adbd
 	mkdir $(MULTIROM_INST_DIR)/multirom/infos
 	if [ -n "$(MR_INFOS)" ]; then cp -r $(PWD)/$(MR_INFOS)/* $(MULTIROM_INST_DIR)/multirom/infos/; fi
 	cp -a $(TARGET_OUT_OPTIONAL_EXECUTABLES)/bbootimg $(MULTIROM_INST_DIR)/scripts/