msm: board-fsm9xxx: Move msm_clock_init() call to fsm9xxx_init()

msm_clock_init() is currently called from fsm9xxx_map_io(). Because
fsm9xxx_map_io() is called before debugfs is available, and the clock
driver attempts to create debugfs nodes when initialized, this order
of events results in a NULL pointer dereference at boot.

Move the msm_clock_init() call from its current location to
fsm9xxx_init(), which is called after debugfs is initialized.

Change-Id: I5ad61f84824a7498f38a81244bc273c507214e65
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>