drivers: hci: stm32_ipm: disable proper LSI
drivers: hci: stm32_ipm: disable proper LSI

LSI1 is used for RTC, LTC2 for RF.
Disable LSI2 instead of LSI1 on BLE with LSE start

Signed-off-by: Pavlo Hamov <ace80680824243f3e282bf7ec19d61b97731347d@jabil.com>

galak/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,finikorg/zephyr,nashif/zephyr,Vudentz/zephyr,nashif/zephyr,galak/zephyr,Vudentz/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,nashif/zephyr