nvidia*: Bring under x11@ umbrella

This brings all nvidia ports under x11@ per some previous comments from
danfe@ and manu@.

The expectation for commits will be a simple quorum of interested people
(i.e. danfe, ashafer, kbowling) for peer review and commit.

Since the nvidia-secondary driver is chained off the main one, the
current maintainer has been notified of the change and can still
participate via freebsd-x11@ and project tools but it does not make
sense to have it differentiated.

Approved by:	danfe, manu

graphics/nvidia-drm-kmod/Makefile

@@ -2,7 +2,7 @@ PORTNAME=	nvidia-drm-kmod
 PORTVERSION=	${NVIDIA_DISTVERSION}
 CATEGORIES=	graphics kld
 
-MAINTAINER=	ashafer@badland.io
+MAINTAINER=	x11@FreeBSD.org
 COMMENT=	NVIDIA DRM Kernel Module
 WWW=		https://www.nvidia.com/object/unix.html
 

x11/nvidia-driver/Makefile

@@ -20,7 +20,7 @@ MASTER_SITES=	NVIDIA/XFree86/FreeBSD-${ARCH_SUFX}/${DISTVERSION}
 DISTNAME=	NVIDIA-FreeBSD-${ARCH_SUFX}-${DISTVERSION}
 DISTFILES=	${DISTNAME}${EXTRACT_SUFX}
 
-MAINTAINER?=	danfe@FreeBSD.org
+MAINTAINER?=	x11@FreeBSD.org
 COMMENT?=	NVidia graphics card binary drivers for hardware OpenGL rendering
 WWW=		https://www.nvidia.com/object/unix.html
 

x11/nvidia-secondary-driver/Makefile

@@ -4,7 +4,6 @@ PORTREVISION=	1
 
 MASTERDIR?=	${.CURDIR}/../nvidia-driver
 
-MAINTAINER=	theron.tarigo@gmail.com
 COMMENT=	NVidia graphics card binary drivers for hardware OpenGL rendering on secondary device
 
 CONFLICTS_INSTALL=	nvidia-driver