main/util-linux: split dmesg into a subpackage

This allows installing dmesg from util-linux without pulling all the rest of the utilities from util-linux-misc.

main/util-linux/APKBUILD

@@ -3,7 +3,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=util-linux
 pkgver=2.40.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Random collection of Linux utilities"
 url="https://git.kernel.org/cgit/utils/util-linux/util-linux.git"
 arch="all"
@@ -34,6 +34,7 @@ subpackages="
 	agetty:_mv_bin
 	blkid:_mv_bin
 	cfdisk:_mv_bin
+	dmesg:_mv_bin
 	findmnt:_mv_bin
 	flock:_mv_bin
 	fstrim:_mv_bin