drivers: clock_control: stm32: define STM32_HSE_CLOCK based only on DT

Ensure the CONFIG_CLOCK_STM32_HSE_CLOCK symbol cannot be overridden by
making it depend on the Device Tree node "clk_hse" being enabled. The
symbol's value is also directly sourced from that node instead of being
user-configurable.

Signed-off-by: Mathieu Choplain <mathieu.choplain-ext@st.com>
1 file changed