usb: ehci-msm-hsic: Use new enumeration scheme for root-hub

Some HSIC devices fail to enumerate with old (or short)
enumeration sequence and report babble error during
GET_DESCRIPTOR request. Hence, enable new enumeration
scheme for HSIC which is used by default for all HCDs.

Change-Id: I86bb87028d749a5e67fa32286f1c4df2514ca208
CRs-fixed: 2035076
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>