rpi3: add defconfig, try with trailer for 64bit kernel

package/bcm28xx-bootloader/Makefile

@@ -92,6 +92,8 @@ endif
 ifeq ($(ADK_TARGET_SYSTEM_RASPBERRY_PI3_64),y)
 	printf "arm_control=0x200\n" >> \
 		$(IDIR_BCM28XX_BOOTLOADER)/boot/config.txt
+	printf "kernel_old=1\n" >> \
+		$(IDIR_BCM28XX_BOOTLOADER)/boot/config.txt
 endif
 ifeq ($(ADK_PACKAGE_BCM28XX_DEBUGTOOL),y)
 	$(INSTALL_DIR) $(IDIR_BCM28XX_DEBUGTOOL)/opt/vc/bin

target/aarch64/Makefile

@@ -56,7 +56,12 @@ endif
 endif
 
 kernel-strip:
+ifeq ($(ADK_TARGET_KERNEL_GIT_REPO_NAME),rpi)
+	@echo adding DT trailer to kernel $(MAKE_TRACE)
+	PATH='$(HOST_PATH)' perl $(LINUX_DIR)/scripts/mkknlimg $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL) $(MAKE_TRACE)
+else
 	@cp $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
+endif
 
 kernel-install: kernel-strip
 	@cp $(BUILD_DIR)/$(TARGET_KERNEL) $(FW_DIR)/$(TARGET_KERNEL)

target/config/Config.in.kernelcfg

@@ -24,6 +24,7 @@ config ADK_TARGET_KERNEL_DEFCONFIG
 	default "bcmrpi_defconfig" if ADK_TARGET_SYSTEM_RASPBERRY_PI
 	default "bcm2709_defconfig" if ADK_TARGET_SYSTEM_RASPBERRY_PI2
 	default "bcm2709_defconfig" if ADK_TARGET_SYSTEM_RASPBERRY_PI3
+	default "bcmrpi3_defconfig" if ADK_TARGET_SYSTEM_RASPBERRY_PI3_64
 	default "twr-k70f120m_defconfig" if ADK_TARGET_SYSTEM_KINETIS_K70
 	default "imx_v7_cbi_hb_defconfig" if ADK_TARGET_SYSTEM_SOLIDRUN_IMX6
 	default "mvebu_defconfig" if ADK_TARGET_SYSTEM_SOLIDRUN_CLEARFOG