power: reset: msm: Defer set_dload_mode to end of probe

The set_dload_mode() call in msm_restart_probe() may depend
on the TCSR base address, which is initialized later in the
probe function. Move this call to the end of
msm_restart_probe() to avoid potentially trying to use an
uninitialized resource.

Change-Id: I65c408f065cc7c68a929ec43d50b0a493942a189
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>