usb: typec: ucsi: extract code to read PD caps

Extract function to read PDOs from the port and set PD capabilities
accordingly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240329-qcom-ucsi-fixes-v2-6-0f5d37ed04db@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>