drivers: flash: stm32 ospi driver configures peripheral clock

The clock of the octospi peripheral is directly defined
by the DTS and configured by the clock_control_on function.
No specific stm32cube function is required then.
The clock control is taking this clock source to calculate
the clock rate.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
1 file changed