drivers: lora: sx126x: cosmetic fixes
drivers: lora: sx126x: cosmetic fixes

Fix minor cosmetic issues discovered while updating driver.

Signed-off-by: Ilya Tagunov <02c7836785d92ca00f3c30970df9a16046e29b0e@gmail.com>

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