driver/i2c: STM32: I2C Read Write Take long time
driver/i2c: STM32: I2C Read Write Take long time

Modified i2c_device.h file. This will solve I2C read
write long time issue. Updated default I2C peripheral clock
value to 160MHz.

fix:
ARMmbed/mbed-os#14732

Signed-off-by: Affrin Pinhero <6fe933403e86d066e48dfd2d5ee140f71afeeee2@hcl.com>

mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed,mbedmicro/mbed