KDE: change default sound mixer applet

The kmix mixer is being replaced by the more flexible and integrated
plasma-pa mixer from audio/plasma5-plasma-pa

For this:

	- remove audio/kmix from the default options set in the metaport
	  multimedia/kdemultimedia

	- add audio/plasma5-plasma-pa to the default options set in the
	  metaport x11/plasma5-plasma

If you do not want pulseaudio on your system and want to keep using
the old mixer, you have multiple options:

	a) don't install the metaports (they only pull in other
	   packages)
	b) manually build multimedia/kdemultimedia and
	   x11/plasma5-plasma with your chosen options
	c) install both

Reported by:		Graham Perrin <grahamperrin@gmail.com>
PR:			258579

multimedia/kdemultimedia/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	kdemultimedia
 DISTVERSION=	${KDE_APPLICATIONS_VERSION}
+PORTREVISION=	1
 CATEGORIES=	multimedia kde
 
 MAINTAINER=	kde@FreeBSD.org
@@ -9,7 +10,7 @@ USES=		kde:5 metaport qt:5
 USE_QT=		#
 
 OPTIONS_DEFINE=		DRAGON FFMPEG AUDIOCD_KIO KDENLIVE KMIX
-OPTIONS_DEFAULT=	${OPTIONS_DEFINE}
+OPTIONS_DEFAULT=	${OPTIONS_DEFINE:NKMIX}
 
 DRAGON_DESC=		Simple video player
 DRAGON_RUN_DEPENDS=	dragon-player>=${KDE_APPLICATIONS_VERSION}:multimedia/dragon
@@ -20,6 +21,7 @@ FFMPEG_RUN_DEPENDS=	kdemultimedia-ffmpegthumbs>=${KDE_APPLICATIONS_VERSION}:mult
 AUDIOCD_KIO_DESC=	Audio CD IOSlave
 AUDIOCD_KIO_RUN_DEPENDS=	audiocd-kio>=${KDE_APPLICATIONS_VERSION}:audio/audiocd-kio
 
+# KMix is being replaced by the plasma-pa mixer
 KMIX_DESC=		Audio mixer
 KMIX_RUN_DEPENDS=	kmix>=${KDE_APPLICATIONS_VERSION}:audio/kmix
 

x11/plasma5-plasma/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	plasma
 DISTVERSION=	${KDE_PLASMA_VERSION}
+PORTREVISION=	1
 CATEGORIES=	x11 kde
 PKGNAMEPREFIX=	plasma5-
 
@@ -15,7 +16,7 @@ USES=		kde:5 metaport qt:5
 USE_KDE=	${_USE_PLASMA_ALL:Nplasma-pa}
 
 OPTIONS_DEFINE=	PHONON PULSEAUDIO
-OPTIONS_DEFAULT=	PHONON
+OPTIONS_DEFAULT=	${OPTIONS_DEFINE}
 
 # Different from PHONON, because this is about the output plugins
 PHONON_DESC=	Include phonon-gstreamer, for sound output