main/alsa-utils: move udev rules to usr-merge

It seems it doesn't actually use pkgconf to determine the udev rules
location...

main/alsa-utils/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=alsa-utils
 pkgver=1.2.12
-pkgrel=1
+pkgrel=2
 pkgdesc="Advanced Linux Sound Architecture (ALSA) utilities"
 url="https://alsa-project.org/"
 arch="all"
@@ -29,7 +29,8 @@ build() {
 		--host=$CHOST \
 		--prefix=/usr \
 		--disable-nls \
-		--with-alsactl-lock-dir=/run/lock
+		--with-alsactl-lock-dir=/run/lock \
+		--with-udev-rules-dir=/usr/lib/udev/rules.d
 	make
 }