usb: typec: there use the tps PP switch states to determine online

There is no PS_RDY interrupt but the PP switch states honour the power
sink/source status for VBUS and VCONN.

Signed-off-by: Angus Ainslie <angus@akkea.ca>
2 jobs for 5.9/pd-charging in 67 minutes and 5 seconds (queued for 3 seconds)
latest
Status Name Job ID Coverage
  Build
passed build:aarch64 #307033
librem5

00:18:32

passed build:deb #307034
librem5:arm64

01:07:05