workstation: move nvidia to subdirectory

Puppet lint was complaining that the correct directory structure wasn't
being adhered to.

manifests/workstation.pp

@@ -259,31 +259,3 @@ class freebsd::workstation inherits freebsd::base {
   }
 }
 
-class freebsd::workstation::nvidia {
-  file_line { 'Enable linux support':
-    path => '/boot/loader.conf',
-    line => 'linux_load="YES"',
-  }
-  ~> exec { '/sbin/kldload linux':
-    refreshonly => true,
-  }
-  -> package {
-    [
-      'nvidia-driver',
-    ]:
-      ensure   => installed,
-  }
-  -> file_line { 'Enable nvidia driver':
-    path => '/boot/loader.conf',
-    line => 'nvidia-modeset_load="YES"',
-  }
-  ~> exec { '/sbin/kldload nvidia-modeset':
-    refreshonly => true,
-  }
-
-  file_line { 'Fix broken vt-terminals':
-    path => '/boot/loader.conf',
-    line => 'hw.vga.textmode=1',
-  }
-}
-

manifests/workstation/nvidia.pp

+#
+class freebsd::workstation::nvidia {
+  file_line { 'Enable linux support':
+    path => '/boot/loader.conf',
+    line => 'linux_load="YES"',
+  }
+  ~> exec { '/sbin/kldload linux':
+    refreshonly => true,
+  }
+  -> package {
+    [
+      'nvidia-driver',
+    ]:
+      ensure   => installed,
+  }
+  -> file_line { 'Enable nvidia driver':
+    path => '/boot/loader.conf',
+    line => 'nvidia-modeset_load="YES"',
+  }
+  ~> exec { '/sbin/kldload nvidia-modeset':
+    refreshonly => true,
+  }
+
+  file_line { 'Fix broken vt-terminals':
+    path => '/boot/loader.conf',
+    line => 'hw.vga.textmode=1',
+  }
+}