[commit: ghc] ghc-8.0: Bump haddock submodule (d4980e5)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : ghc-8.0
Link       : http://ghc.haskell.org/trac/ghc/changeset/d4980e5170f83f2b2d319552b6f33daf70713b6a/ghc

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commit d4980e5170f83f2b2d319552b6f33daf70713b6a
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Wed Apr 20 11:47:31 2016 +0200

    Bump haddock submodule
    
    Install files needed for --hyperlinked-source. Fixes #11949.


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d4980e5170f83f2b2d319552b6f33daf70713b6a
 utils/haddock | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/haddock b/utils/haddock
index 03b02a0..3b980e7 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit 03b02a0faa5381d3a614e3f39b36923b0e988051
+Subproject commit 3b980e7fc47bb898b00c7d37d442e0fd5716cb7c