This symbol doesn't need to be exported to clk providers anymore.
Originally, it was hidden inside clk.c, but then OMAP needed to get
access to it in commit 819b4861 ("CLK: ti: add init support for
clock IP blocks"), but eventually that code also changed in commit
c08ee14c ("clk: ti: change clock init to use generic of_clk_init")
and we were left with this exported. Move this back into clk.c so that
it isn't exposed anymore.
Signed-off-by: NStephen Boyd <sboyd@kernel.org>