drivers/clock_control: stm32: Fix macro to get HCLK freq

__LL_RCC_CALC_HCLK1_FREQ is only available for WL and WB series,
for other series __LL_RCC_CALC_HCLK_FREQ should be used.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>