Persimmon audio codec verb patch.

Persimmon audio codec verb patch.

Verb data is required for the HDA audio codec in the sb800 southbridge. Verb
data is not required for mainboards that use G-Series HDMI. It is also a setting
the may be boards specific. This fixes issues with Windows audio on Persimmon.

Change-Id: I067506871e92078d122cf79872363d8937d47e50
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: http://review.coreboot.org/490
Tested-by: build bot (Jenkins)
Reviewed-by: Kerry Sheh <shekairui@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>