hal: Correct mixer control name for 3.5mm headphone

Bug: 117198646
Test: Self build and test OK.
Change-Id: I749609aabfed53e8adb3575695c248bf9a674874
Signed-off-by: Yung Ti Su <andysu@google.com>
(cherry picked from commit 39a2b8a03c0a8a44940ac732f636d9cc1959eff2)
1 file changed