Updates to follow mbed SDK coding style guidelines.

Dependencies:   ST_INTERFACES X_NUCLEO_COMMON

Dependents:   53L0A1_Satellites_with_Interrupts_OS5 Display_53L0A1_OS5

Fork of X_NUCLEO_53L0A1 by ST

x_nucleo_53l0a1.cpp/shortlog@01b8004bc0a7: not found in manifest