rockpro64-uboot: update to 2026.04.

srcpkgs/rockpro64-uboot/template

@@ -1,6 +1,6 @@
 # Template file for 'rockpro64-uboot'
 pkgname=rockpro64-uboot
-version=2026.01
+version=2026.04
 revision=1
 archs="aarch64*"
 hostmakedepends="bison flex bc dtc which python3 swig python3-devel python3-setuptools python3-pyelftools openssl-devel libuuid-devel gnutls-devel ncurses-libtinfo-devel"
@@ -11,7 +11,7 @@ maintainer="Tim Sandquist <tim.sandquist@gmail.com>"
 license="GPL-2.0-or-later, BSD-3-Clause"
 homepage="https://www.denx.de/wiki/U-Boot/"
 distfiles="https://ftp.denx.de/pub/u-boot/u-boot-${version}.tar.bz2"
-checksum=b60d5865cefdbc75da8da4156c56c458e00de75a49b80c1a2e58a96e30ad0d54
+checksum=ac7c04b8b7004923b00a4e5d6699c5df4d21233bac9fda690d8cfbc209fff2fd
 
 do_configure() {
 	unset CFLAGS CXXFLAGS CPPFLAGS LDFLAGS