debian: update some meta and copyright information

lintian wasn't to happy..

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

debian/control.in

@@ -53,7 +53,7 @@ Priority: optional
 Architecture: any
 Provides: linux-headers-@KVNAME@-amd64
 Depends: coreutils | fileutils (>= 4.0)
-Description: The Proxmox PVE Kernel Headers
+Description: Proxmox Kernel Headers
  This package contains the linux kernel headers
 
 Package: pve-kernel-@KVNAME@
@@ -64,7 +64,7 @@ Provides: linux-image-@KVNAME@-amd64
 Suggests: pve-firmware
 Depends: busybox, initramfs-tools
 Recommends: grub-pc | grub-efi-amd64 | grub-efi-ia32 | grub-efi-arm64
-Description: The Proxmox PVE Kernel Image
+Description: Proxmox Kernel Image
  This package contains the linux kernel and initial ramdisk used for booting
 
 Package: pve-kernel-@KVNAME@-dbgsym
@@ -73,7 +73,7 @@ Provides: linux-debug
 Section: devel
 Priority: optional
 Build-Profiles: <pkg.pve-kernel.debug>
-Description: The Proxmox PVE Kernel debug image
+Description: Proxmox Kernel debug image
  This package provides the kernel debug image for version @KVNAME@. The debug
  kernel image contained in this package is NOT meant to boot from - it is
  uncompressed, and unstripped, and suitable for use with crash/kdump-tools/..

debian/copyright

@@ -1,11 +1,8 @@
 This is a prepackaged version of the Linux kernel binary image.
 
-This package was put together by Proxmox Server
-Solutions GmbH <support@proxmox.com>.
-
-We use the RHEL7 kernel sources, available from:
-
-ftp://ftp.redhat.com/redhat/rhel/
+For the packaging and all files in the debian/ folder consider:
+ Copyright (C) 2007-2022 Proxmox Server Solutions GmbH
+ Licensed under the AGPL-3.0-or-later
 
 Linux is copyrighted by Linus Torvalds and others.