temp/u-boot-rockpro64: new aport (MR 882)

temp/u-boot-rockpro64/APKBUILD

+# U-boot RC built for rk3399, can be upstreamed to alpine soon when 2020.04 is released
+
+pkgname=u-boot-rockpro64
+pkgver=2020.04_rc3
+pkgrel=0
+pkgdesc="u-boot bootloader for the rk3399"
+url="https://gitlab.com/pine64-org/u-boot"
+arch="aarch64"
+license="GPL-2.0-or-later OFL-1.1 BSD-2-Clause BSD-3-Clause eCos-2.0 IBM-pibs
+	ISC LGPL-2.0-only LGPL-2.1-only X11"
+makedepends="$depends_dev bc dtc python3-dev swig bison flex openssl-dev arm-trusted-firmware-rk3399"
+options="!check"
+source="
+	ftp://ftp.denx.de/pub/u-boot/u-boot-${pkgver//_/-}.tar.bz2
+	"
+builddir="$srcdir"/u-boot-${pkgver//_/-}
+
+build() {
+	touch include/config.h
+	LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"' > include/timestamp_autogenerated.h
+	LC_ALL=C date +'#define U_BOOT_TIME "%T"' >> include/timestamp_autogenerated.h
+
+	export BL31="/usr/share/arm-trusted-firmware-rk3399/bl31.elf"
+	export BUILD_DIR="$builddir"/build
+	mkdir -p "$BUILD_DIR"
+	make O="$BUILD_DIR" HOSTCC=gcc ARCH=arm rockpro64-rk3399_defconfig
+	make O="$BUILD_DIR" HOSTCC=gcc ARCH=arm all
+}
+
+package() {
+	install -D -m644 build/u-boot-rockchip.bin \
+		"$pkgdir"/usr/share/u-boot/pine64-rockpro64/u-boot-rockchip.bin
+}
+
+
+sha512sums="6e617472bd38dd1f681db121bcb565abea7a15fcdb7a5920ec6dffd283d4a4580d81134768454a7c954ac7f5cbee8493879452991b6cf35de31afcd2d9448a11  u-boot-2020.04-rc3.tar.bz2"