clk: stm32: fix clock counter

clk: stm32: fix clock counter

In RCC the ops of the CCF registered CLK device can be called directly,
this patch avoid recursive call of clk_ function done by CCF clock
framework which update the clock information, for example
clk_enable is called 2 times, clkp->enable_count is increased 2 times.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>