u-boot-tool: 2023.01 -> 2023.04 ; moved from opt

u-boot-tools/.footprint

@@ -0,0 +1,8 @@
+drwxr-xr-x	root/root	usr/
+drwxr-xr-x	root/root	usr/bin/
+-rwxr-xr-x	root/root	usr/bin/mkenvimage
+-rwxr-xr-x	root/root	usr/bin/mkimage
+drwxr-xr-x	root/root	usr/share/
+drwxr-xr-x	root/root	usr/share/man/
+drwxr-xr-x	root/root	usr/share/man/man1/
+-rw-r--r--	root/root	usr/share/man/man1/mkimage.1.gz

u-boot-tools/.signature

@@ -0,0 +1,5 @@
+untrusted comment: verify with /etc/ports/contrib.pub
+RWSagIOpLGJF38YdzV8qUw6jXmn1ZMIrtzXMw/YDUjtLMmhxKbadVJOPSj0pjqGz5cNZtzIEfWYuVkLo3eGPbgfqhL5MONeuSQI=
+SHA256 (Pkgfile) = 14dc9dd0c01d3ae6a6ee1889889dcc9d41f4d1c789f29c28396009dd507e3e65
+SHA256 (.footprint) = 5be4d495b3869ee52e7a232f0769548048a2782eb5518c1a1aea7f4254274eb9
+SHA256 (u-boot-2023.04.tar.bz2) = e31cac91545ff41b71cec5d8c22afd695645cd6e2a442ccdacacd60534069341

u-boot-tools/Pkgfile

@@ -0,0 +1,20 @@
+# Description: U-Boot tools
+# URL: https://www.denx.de/wiki/U-Boot/WebHome
+# Maintainer: Tim Biermann, tbier at posteo dot de
+# Depends on: gnutls openssl swig
+
+name=u-boot-tools
+version=2023.04
+release=1
+source=(https://ftp.denx.de/pub/u-boot/u-boot-$version.tar.bz2)
+
+build() {
+  cd u-boot-$version
+
+  make sandbox_config
+  make tools TOOLSUBDIRS=""
+
+  install -d -m 0755 $PKG/usr/{bin,share/man/man1}
+  install -m 0755 tools/mk{,env}image $PKG/usr/bin
+  install -m 0644 doc/mkimage.1 $PKG/usr/share/man/man1
+}