audio/alsa-utils: Switch master site to GitHub.

The original distfiles are getting hard to come by for some reason, so
switch to pulling source tarballs directly from GitHub.  Replace
patches that apply to generated files with patches that apply to their
sources.

audio/alsa-utils/Makefile

@@ -2,9 +2,14 @@
 
 PORTNAME=	alsa-utils
 PORTVERSION=	1.2.2
+PORTREVISION=	1
+DISTVERSIONPREFIX=	v
 CATEGORIES=	audio
-MASTER_SITES=	ftp://ftp.alsa-project.org/pub/utils/ \
-		GENTOO
+MASTER_SITES=	GH
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	alsa-project
+GH_PROJECT=	${PORTNAME}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	ALSA compatibility utilities

audio/alsa-utils/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1615527978
-SHA256 (alsa-utils-1.2.2.tar.bz2) = 44807bd578c5f6df6e91a11b8d37e546424a5a1ea8d8e659ee359fe01730e4f3
-SIZE (alsa-utils-1.2.2.tar.bz2) = 1274821
+TIMESTAMP = 1634081670
+SHA256 (alsa-project-alsa-utils-v1.2.2_GH0.tar.gz) = 9da1ce4f12a4dd56d55cd5a8f6ae7d56ac91397c3d37fdfcd737adeeb34fce1c
+SIZE (alsa-project-alsa-utils-v1.2.2_GH0.tar.gz) = 1252639

audio/alsa-utils/files/patch-alsactl_Makefile.am

@@ -0,0 +1,8 @@
+--- alsactl/Makefile.am.orig	2020-02-19 12:02:10 UTC
++++ alsactl/Makefile.am
+@@ -66,4 +66,4 @@ CLEANFILES = \
+ 	90-alsa-restore.rules
+ 
+ %.7: %.xml
+-	xmlto man $?
++	$(xmlto) man $?

audio/alsa-utils/files/patch-alsactl_Makefile.in

@@ -1,11 +0,0 @@
---- alsactl/Makefile.in.orig	2021-03-12 04:46:51 UTC
-+++ alsactl/Makefile.in
-@@ -1110,7 +1110,7 @@ alsa-restore.service: alsa-restore.service.in
- 	$(edit)
- 
- %.7: %.xml
--	xmlto man $?
-+	$(xmlto) man $?
- 
- # Tell versions [3.59,3.63) of GNU make to not export all variables.
- # Otherwise a system limit (for SysV at least) may be exceeded.