i2c-tools: add udev rule and group

srcpkgs/i2c-tools/files/45-i2c-tools.rules

@@ -0,0 +1,2 @@
+# Assigns the i2c devices to group i2c, and gives that group RW access:
+KERNEL=="i2c-[0-9]*", GROUP="i2c", MODE="0660"

srcpkgs/i2c-tools/template

@@ -1,7 +1,7 @@
 # Template file for 'i2c-tools'
 pkgname=i2c-tools
 version=4.2
-revision=1
+revision=2
 build_style=gnu-makefile
 make_install_args="sbindir=/usr/bin"
 depends="perl"
@@ -11,6 +11,11 @@ license="GPL-2.0-or-later"
 homepage="https://packages.debian.org/sid/i2c-tools"
 distfiles="${DEBIAN_SITE}/main/i/${pkgname}/${pkgname}_${version}.orig.tar.xz"
 checksum=37f2dabc7082d185903ff21d1f584b5dcb4dd2eb2c879bbd8d7c50ae900dacd6
+system_groups="i2c"
+
+post_install() {
+	vinstall "${FILESDIR}/45-i2c-tools.rules" 644 usr/lib/udev/rules.d
+}
 
 i2c-tools-devel_package() {
 	short_desc+=" - development files"