ehci_msm2: Fix enumeration during PHY suspend failure

PHY suspend fails as part of USB LPM at times. Currently, we are resetting
the PHY and Link during this failure case, but the EHCI stack is not reset
due to which we are seeing device enumeration failure cases. Fix this issue
by removing hcd and adding hcd back during PHY suspend failure.

CRs-Fixed: 382279
Change-Id: I2d69e75409ec2b783dbdd06de4f34fe0356c1c45
Signed-off-by: Chiranjeevi Velempati <cvelempa@codeaurora.org>