max20339: add gpio to check ls1 switch open

This is similar to the initial API: expose an additional GPIO to check
if the lsw1 switch is open.

Bug: 179782740
Test: Connect headset, disconnect, check DRP toggle time
Signed-off-by: AleX Pelosi <[email protected]>
Change-Id: I41ea49722cf79fe13ca61ad636e763cc715e476a
1 file changed