rkbin: add new TF-A package for rk35xx

Currently there's no usable mainline (open source) TF-A implementation
for rk35xx SoCs, so pack the prebuilt firmware from the vendor.

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>

package/boot/rkbin/Makefile

@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2021-2023 ImmortalWrt.org
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=rkbin
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL=https://github.com/rockchip-linux/rkbin.git
+PKG_SOURCE_DATE:=2023-07-26
+PKG_SOURCE_VERSION:=b4558da0860ca48bf1a571dd33ccba580b9abe23
+PKG_MIRROR_HASH:=5842fbcb7e217c336235573e431e427f2f745390d989f6765a6c258a5bdf1b6e
+
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINER:=Tianling Shen <cnsztl@immortalwrt.org>
+
+include $(INCLUDE_DIR)/kernel.mk
+include $(INCLUDE_DIR)/trusted-firmware-a.mk
+include $(INCLUDE_DIR)/package.mk
+
+define Trusted-Firmware-A/Default
+  NAME:=Rockchip $(1) SoCs
+  BUILD_TARGET:=rockchip
+endef
+
+define Trusted-Firmware-A/rk3568
+  BUILD_SUBTARGET:=armv8
+  ATF:=rk35/rk3568_bl31_v1.43.elf
+  TPL:=rk35/rk3568_ddr_1560MHz_v1.18.bin
+endef
+
+TFA_TARGETS:= \
+	rk3568
+
+define Build/Compile
+endef
+
+define Package/trusted-firmware-a/install
+	$(INSTALL_DIR) $(STAGING_DIR_IMAGE)
+
+	$(CP) $(PKG_BUILD_DIR)/bin/$(ATF) $(STAGING_DIR_IMAGE)/
+	$(CP) $(PKG_BUILD_DIR)/bin/$(TPL) $(STAGING_DIR_IMAGE)/
+endef
+
+$(eval $(call BuildPackage/Trusted-Firmware-A))