tree fa20150260d0a0d5f5ab46b69a76121efb556434
parent 051ef9fc41912b514b39e090d364d5c7aeab6106
author sam_chen <sam_chen@asus.com> 1362386008 +0800
committer Iliyan Malchev <malchev@google.com> 1366326493 -0700

Audio: headset: add debug board detection mechanism.

1.Use gpio-85: low = debug board and high = no debug board.
2.Only support hardware revison A and after.

Change-Id: If4db1fd8f94036dfb7428e63e54b4ae41b60e0cd
Signed-off-by: sam_chen <sam_chen@asus.com>