usb: pd: Clear PD_IN_HARD_RESET in PE_SNK_TRANSITION_TO_DEFAULT

Make sure to properly clear the PD_IN_HARD_RESET property upon
reaching the SNK_Transition_to_default state to ensure that the
charger driver is notified that hard reset has completed. Move
the clearing of pd->hard_reset flag here as well for clarity.

Also clear the pd->in_pr_swap flag when initiating or receiving
hard reset signal as that should promptly abort any PR swap
operation in progress.

Change-Id: I967e3841af614ecd2129bf60dc08a1b19731c4e3
Signed-off-by: Jack Pham <jackp@codeaurora.org>