bitbake: fetch2/npm: Enable fetcher

For some reason the enablement piece of the patch went missing, add it.

(Bitbake rev: 0270b5a3873ed0aeca3a66198c87a6164fb644b8)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/__init__.py

@@ -1741,6 +1741,7 @@ from . import hg
 from . import osc
 from . import repo
 from . import clearcase
+from . import npm
 
 methods.append(local.Local())
 methods.append(wget.Wget())
@@ -1757,3 +1758,4 @@ methods.append(hg.Hg())
 methods.append(osc.Osc())
 methods.append(repo.Repo())
 methods.append(clearcase.ClearCase())
+methods.append(npm.Npm())