stm32cube: Disable I2C HAL when defining I2C_SPEED_STANDARD

On some STM32 series, I2C HAL defines I2C_SPEED_STANDARD and
I2C_SPEED_FAST. These definitions conflict with Zephyr I2C API.

Since Zephyr I2C STM32 driver uses LL API, we can disable I2C HAL.
Disable I2C HAL for L1 and F2 series. Deactivation is already done
2 other impacted series F1 and F4.

Additionally, on F1 series, add the commented definition line to
make the change more visible.

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