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commit 18dcd304 upstream.

The internal mic input is phase inverted on one channel.
To avoid people in userspace summing the channels together
and get zero result, use a separate mixer control for the
inverted channel.

BugLink: https://bugs.launchpad.net/bugs/903853

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[wml: Backported to 3.4:
 - Adjust context
 - one more enum value CXT_PINCFG_LENOVO_TP410
 - Change both invocations of apply_pin_fixup()]
Signed-off-by: Weng Meiling <wengmeiling.weng@huawei.com>