WASHINGTON — Bank of America’s record $16.65 billion settlement for its role in selling shoddy mortgage bonds — $7 billion of it geared for consumer relief — offers a glint of hope for desperate homeowners. The settlement requires the second-largest U.S. bank to reduce some homeowners’ loan balances, provide new loans to low-income buyers and address areas of neighborhood blight. But consumer advocates say relatively few people will be helped relative to the devastation triggered by the …