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This patch removes the `owner` field in bakery_lock_t structure which
is the data structure used in the bakery lock implementation that uses
coherent memory. The assertions to protect against recursive lock
acquisition were based on the 'owner' field. They are now done based
on the bakery lock ticket number. These assertions are also added
to the bakery lock implementation that uses normal memory as well.

Change-Id: If4850a00dffd3977e218c0f0a8d145808f36b470