Revert "usb: pd: Don't retry sending Source Capabilities if PD capable"

Commit 25bdeb88 ("usb: pd: Don't retry sending Source Capabilities
if PD capable") added a Soft Reset signal to the sink device that we
already know is PD capable if send Source Capabilities fail instead of
retrying for nCapsCount times. This change was initially made to fix
HARD RESET compliance failure but later it got fixed in the compliance
SW. Revert this since it leads to re-enumeration failure of Multiport
adapter when Hard Reset signal comes if adapter is already connected.

Change-Id: I46a407ddc7ee3e8845e480940a8f966c9083f04d
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>