interconnect: qcom: sm6150: fix UAF under remove function

UAF is observed while unloading the interconnect driver.
Interconnect is core to the system and should not
be unloaded once it is probed. Marking the driver as
permanent by removing the module_exit function.

Change-Id: Ib1335860da25147ca87715a1935d2e8feee3fde4
Signed-off-by: Raviteja Laggyshetty <quic_rlaggysh@quicinc.com>