USB: Retry GetPortStatus if HUB returns 2 bytes instead of 4

Internal HUB present in ISP1763A sometimes returns 2 bytes of
data in response to GetPortStatus request. This is observed during
mutiple iterations of suspend/resume with ISP1763A.
As part of workaround retry GetPortStatus request if HUB
returns 2 bytes.

Change-Id: Iae28abe0d9e082e4741e585e085d9fb9e6e7594a
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>