UBUNTU: [Packaging] NVIDIA -- Add the NVIDIA 455 driver

Add signed modules for the NVIDIA 455 series.

BugLink: https://bugs.launchpad.net/bugs/1902093

Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
[smb: fix up to actually apply to oem-5.6 which has only nvidia-450
      so far]
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

debian/dkms-versions

@@ -1,3 +1,4 @@
 zfs-linux 0.8.3-1ubuntu12.4
 nvidia-graphics-drivers-450 450.80.02-0ubuntu0.20.04.2
+nvidia-graphics-drivers-455 0
 virtualbox 6.1.10-dfsg-1~ubuntu1.20.04.1

debian/rules

@@ -121,6 +121,7 @@ do_any_tools=$(sort $(filter-out false,$(do_linux_tools) $(do_cloud_tools)))
 # Versions of dkms packages.
 dkms_zfs_linux_version=$(shell gawk '/^zfs-linux / { print $$2; }' debian/dkms-versions)
 dkms_nvidia_450_version=$(shell gawk '/^nvidia-graphics-drivers-450/ { print $$2; }' debian/dkms-versions)
+dkms_nvidia_455_version=$(shell gawk '/^nvidia-graphics-drivers-455/ { print $$2; }' debian/dkms-versions)
 dkms_vbox_guest_version=$(shell gawk '/^virtualbox/ { print $$2; }' debian/dkms-versions)
 
 # Debian Build System targets

debian/rules.d/2-binary-arch.mk

@@ -402,6 +402,7 @@ endif
 
 ifeq ($(do_dkms_nvidia),true)
 	$(call build_dkms, $(bldinfo_pkg_name)-$*, $(pkgdir_bldinfo)/usr/lib/linux/$(abi_release)-$*/signatures, "", nvidia-450, pool/restricted/n/nvidia-graphics-drivers-450/nvidia-kernel-source-450_$(dkms_nvidia_450_version)_$(arch).deb pool/restricted/n/nvidia-graphics-drivers-450/nvidia-dkms-450_$(dkms_nvidia_450_version)_$(arch).deb)
+	$(call build_dkms, $(bldinfo_pkg_name)-$*, $(pkgdir_bldinfo)/usr/lib/linux/$(abi_release)-$*/signatures, "", nvidia-455, pool/restricted/n/nvidia-graphics-drivers-455/nvidia-kernel-source-455_$(dkms_nvidia_455_version)_$(arch).deb pool/restricted/n/nvidia-graphics-drivers-455/nvidia-dkms-455_$(dkms_nvidia_455_version)_$(arch).deb)
 endif
 
 ifeq ($(do_extras_package),true)