USB: ci13xxx_msm_hsic: Allow turning off Core clocks in suspend

Commit 4316bfd9e4a5b ("usb: ci13xxx_msm_hsic: Fix HSIC Connect
sequence") removed usage of core_clk_always_on_workaround but
it also introduced this bug to not turn off core clocks during
suspend.

Change-Id: Ia50ceed467e73e9d5f2881b11a5218913ba3d511
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>