SRU request for LP#191137

[Stefan Bader]

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This is preliminary. I try to get some more positive verifications ASAP.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/191137

SRU justification:

Impact: On several Sony laptop models the changes introduced by upstream
commit c04209a7948b95e8c52084e8595e74e9428653d3 to enable the EC handler
during scan will cause those machines to hang on boot.

Fix: There was a work-around to remove the quiet option on boot but it
seems the combination of two upstream fixes this for real. [patches
attached]

Testcase: Boot a Hardy kernel on one of the affected laptops with the
quiet option active (default) and it will hang. With the fixes this
should not happen.
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