Vybhav Kadaba / Mbed OS EV-PRO-MW1001_82_25

. Reverting Mbed firmware to support customers using ADMW1001 device firmware v82.25. 2. New Mbed firmware will be available when ADMW1001 device firmware is released to the public. 3. SPI speed is reduced to 700KHz 4.The program compiled and tested with device FW v82.25